Snorkel S2755BE Owner's manual

REPAIR PARTS
MANUAL
Part Number 13715-2
November 2012 (Rev C)
Version III
Serial Number S2755RT-07-000001 and after
Diesel
Bi-Energy 24V DC
5555
5555
5555
5555

S2755RT, S2255RT – 13715-2 page 1
Table of Contents
General Specifications
General Specifications S2255RT ................3
General Specifications S2755RT ................4
Engine Data.................................5
Engine Oil Charts ............................5
Classification ................................6
AS1418.1 Group Classification..................6
Commissioning Information ....................6
Table of Contents
Maintenance Information
About this Manual: ...........................7
Manual Organization..........................7
General Specifications.......................7
Maintenance ..............................7
Auto level system...........................7
Repair parts and drawings....................7
Hydraulics ................................7
Electrical .................................7
Options...................................7
Parts index - Page locator ....................7
Maintenance and Schematics...................7
Maintenance information .....................7
Maintenance schedules .......................8
Daily Maintenance ...........................9
Pre-operational inspection....................9
90 Day or 150 Hour Maintenance
(Trained Service Technician) ................10
Yearly or 500 Hour Maintenance
(Trained Service Technician) ................10
Lubricants .................................11
Pressure gun application....................11
Lubrication ...............................11
King pins (Item 1)..........................11
Tie rods (Item 2) ..........................11
Steer cylinder end (Item 3) ..................11
Wheel bearings
Drive wheels (Item 4) .....................11
Engines (Item 5) ..........................12
Hydraulic oil reservoir (Item 6) ...............12
Return filter (Item 7)........................12
Door hinges and latches (Item 8) .............12
Slide pads (Item 9).........................12
Scissor arm bearings (Item 10) ...............12
Batteries (Item 11) ..........................12
Preventive inspection maintenance
90 day or 150 hour checklist .................14
Torque chart ...............................16
Servicing STC Fittings .......................17
Disconnection ............................17
Inspection................................17
Installation and connection ..................17
Seal replacement instructions ................18
To order service or repair parts ................19
ANSI and OSHA compliance.................19
Manuals ................................19
Product Warranty ...........................19
Auto Level System
Auto Level System Troubleshooting.............21
Test procedures...........................21
Using the EZcal ...........................21
EZcal auto level calibration procedure .........22
Section 1. - Repair Parts
Cabinet assembly ..........................1-2
Cabinet assembly drawing ...................1-3
Steer axle assembly drawing .................1-4
Steer axle assembly ........................1-5
Articulating axle assembly....................1-6
Articulating axle assembly drawing .............1-7
Control cabinet assembly drawing .............1-8
Control cabinet assembly ....................1-9
Fuel cabinet assembly......................1-10
Fuel cabinet assembly drawing ...............1-11
Engine assembly drawing, Kubota D902 .......1-12
Engine assembly, Kubota D902 ..............1-13
Cable operated emergency bleed down ........1-14
Cable operated bleed down drawing...........1-15
Scissor stack S2255RT .....................1-16
Scissor atack drawing, SR2255 ..............1-17
Scissor stack drawing, SR2755...............1-18
Scissor stack S2755RT .....................1-19
Stabiliser assembly ........................1-20
Stabiliser assembly drawing .................1-21
Platform assembly drawing ..................1-22
Platform assembly .........................1-23
Engine cabinet assembly....................1-24
Engine cabinet assembly drawing.............1-25
Fuel tank assembly, diesel fuel ...............1-26

page 2S2755RT, S2255RT – 13715-2
Table of Contents
Upper control box mounting assembly .........1-27
Placards and decals installation ..............1-28
Placards and decals drawing ................1-29
Section 2. - Hydraulics
Hose part numbers and colour codes ...........2-3
Hydraulic assembly .........................2-4
Hydraulic schematic drawing..................2-5
Manifold assembly ..........................2-8
Manifold assembly ..........................2-9
Manifold assembly, 4WD....................2-10
Manifold assembly, stabilisers................2-11
Hydraulic oil tank assembly..................2-12
Hydraulic oil tank assembly drawing ...........2-13
Steer axle cylinder .........................2-14
Axle cylinder..............................2-15
Main lift cylinder assembly ..................2-16
Stabiliser Cylinder .........................2-17
Section 3. - Electrical
Looms ...................................3-2
Electrical schematic drawing, auto level .........3-3
Colour coded wiring circuit auto level ...........3-4
Ground control box assembly drawing ..........3-6
Ground control box assembly .................3-7
Ground box ...............................3-8
Ground box drawing - sheet 1 .................3-9
Ground box drawing - sheet 2 ................3-10
Platform control box assembly ...............3-12
Platform Control Box Assembly drawing
Sheet 1 ................................3-13
Platform Control Box Assembly drawing
Sheet 2 ................................3-14
Section 4. - Options
AC outlet at platform, 230 volt .................4-2
AC outlet at platform 230V drawing.............4-3
Flashing light installation .....................4-4
Section 4 - 24VDC Option
24VDC Option .............................4-5
Colour coded wiring schematic,
24VDC option ............................4-7
Control & hydraulic cabinet assembly - 24VDC ...4-8
Control & hydraulic cabinet assembly
drawing 24VDC option .....................4-9
Battery box assembly drawing, 24VDC option ...4-10
Battery box assembly - 24VDC option .........4-11
Battery box mounting - 24VDC option..........4-12
Emergency bleed down mounting, 24VDC ......4-13
Relay box assembly, 24VDC option ...........4-14
Relay box assembly drawing, 24VDC option ....4-15
Unloader valve 24VDC option ................4-16

General Specifications
■General Specifications S2255RT
S2755RT, S2255RT – 13715-2 Rev C page 3
SPECIFICATIONS S2255RT
Nominal working height Wheels 8.1m 26' 7"
Stabilisers 8.5m 27' 11 "
Platform floor height Wheels 6.1m 20'
Stabilisers 6.5m 21' 4"
Roll out deck size 1200mm 47”
Drive speed Below 2.4m 0 to 5.2kph 0 to 3.3mph
Above 2.4m 0 to 0.64kph 0 to 0.4mph
Safe working load
(Roll out deck NOT extended)
Main deck 420kg 925lbs
Safe working load
(Roll out deck extended)
Main deck 300kg 661lbs
Roll out deck 120kg 265lbs
Platform size 2.73 x 1.4m 8' 11" x 4' 7"
Stowed height Hand rails up 2.35m 7' 8"
Hand rails folded down 1.55m 5' 1"
Overall length 3.3m 11’ 0”
Overall width 1.45m 4' 9"
Gradeability 35%
Lift time 24 - 29 seconds
Lower time 40 - 42 seconds
Turning radius Inner 2.5m 8.2'
Outer 4.75m 15.6'
Maximum wind speed 12.5m/s 45km/h 28mph
Insulation rating Nil
Tyres Poly filled loader lug 23" x 8.9" x 12"
Overall weight 2360kg 5202lbs
Ground clearance Minimum 170mm 7”
Mid cabinet 260mm 10.2"
Maximum sound level at platform 86db
Maximum outrigger load 1420kg 3130lbs
Maximum wheel load 1420kg 3130lbs
Maximum chassis inclination 2/4 degrees
Maximum manual force 400N

■General Specifications S2755RT
page 4Rev C S2755RT, S2255RT – 13715-2
General Specifications
SPECIFICATIONS S2755RT
Nominal working height Wheels 9.9m 32' 6"
Stabilisers 10.4m 34' 1"
Platform floor height Wheels 7.9m 25' 11"
Stabilisers 8.4m 27' 7"
Roll out deck size 1200mm 47”
Drive speed Below 2.4m 0 to 7kph 0 to 4.3mph
Above 2.4m 0 to 0.8kph 0 to 0.5mph
Safe working load
(Roll out deck NOT extended)
Main deck 340kg 750lbs
Safe working load
(Roll out deck extended)
Main deck 220kg 485lbs
Roll out deck 120kg 264lbs
Platform size 2.73 x 1.4m 8' 11" x 4' 7"
Stowed height Hand rails up 2.5m 8' 3"
Hand rails folded down 1.75m 5' 8"
Overall length 3.3m 11’ 0”
Overall width 1.45m 4' 9"
Gradeability 35%
Lift time seconds
Lower time seconds
Turning radius Inner 2.5m 8.2'
Outer 4.75m 15.6'
Power source Diesel engine
Maximum wind speed 12.5m/s 45km/h 28mph
Insulation rating Nil
Tyres Poly filled loader lug 23" x 8.9" x 12"
Overall weight 2520kg 5555.5lbs
Ground clearance Minimum 170mm 7”
Mid cabinet 260mm 10.2"
Maximum sound level at platform 86db
Maximum outrigger load 1470kg 3240lbs
Maximum wheel load 1470kg 3240lbs
Maximum chassis inclination 2/4 degrees
Maximum manual force 200N Outdoors, 400N Indoors

S2755RT, S2255RT – 13715-2 Rev C page 5
General Specifications
■Engine Data
Model KUBOTA (diesel)
Model D902
Fuel Diesel
Fuel Grade ASTM Grade 2-D S5000
Tier 4 Compliance: Low Sulpher ASTM Grade 2-D S500 centane no. >44
(For operating temperature below 32oF (0oC) use "winterised" no. 2-D
Coolant 50% water + 50% ethylene glycol
Maximum Temperature 110oC
Oil capacity 3.7 L
Oil Grade API: Quality better than CD
Oil Weight See chart below
KUBOTA D902
77
32
20
0
°F °C
+25
0
-7
-17
SAE 10W/30 or 10W40
SAE 30SAE 20SAE 10W
Single Viscosity Multi Viscosity
■Engine Oil Charts

■Classification
Group A Type 3
■AS1418.1 Group Classification
C3
■Commissioning Information
Commissioning of the machine consists of
performing the Pre Delivery and Inspection Report
(PDIR) satisfactorily.
This PDIR is performed by Snorkel or it's agent
before the machine is delivered.
A completed PDIR can be obtained, by request,
from the sales agent.
page 6Rev C S2755RT, S2255RT – 13715-2
General Specifications

Maintenance Information
■About this Manual:
This Maintenance and Repair Parts manual covers
current production machines only.
While Snorkel has attempted in every way to
confirm that all information in this manual is correct,
improvements are being constantly made to the
machine that may not be reflected in this manual.
NOTE:
It is recommended that you record the serial and
model number of your machine (see page 19 of this
chapter). This information is found on the serial
number placard.
■Manual Organization
The Repair Parts Manual consists of six sections
with an individual table of contents preceding
sections 1 through 4.
Subassemblies and detailed parts are identified by
index numbers on the drawings that correspond to
the item numbers on the parts listing. When
requesting any part, always specify complete part
number, description, model and serial number of
your unit.
The following is a general description of each
section and its contents.
❑General Specifications
The section immediately preceding, contains
information relating to the general specifications of
the S2255RT & S2755RT.
❑Maintenance
The pages immediately following, contain
information as to the maintenance schedules -
lubricants and procedures for proper lubrication of
the unit.
❑Auto level system
The last section in the Maintenance chapter gives
guidelines for trouble shooting and calibration of
the auto level system
❑Repair parts and drawings
Repair Parts (Section 1), contains parts listings
and drawings for general mechanical repair parts
of all major installations and subassemblies of the
unit.
❑Hydraulics
(Section 2), contains parts listings and drawings of
hydraulic components installations including
hydraulic schematics and individual components
such as cylinders, controls valves and solenoid
operated valves.
❑Electrical
Electrical (Section 3), contains listings and
drawings of electrical components installations
including wiring schematics.
❑Options
Options (Section 4), contains parts listings and
drawings of optional installations.
❑Parts index - Page locator
The parts index - page locator, identifies the
component by name and directs you to the section
and page number where you may find information
for that part such as its part order number, etc.
■Maintenance and Schematics
❑Maintenance information
The parts drawings located in the repair parts
sections, are designed for use as a guide for proper
disassembly of the machine and components as
well as for parts replacement. Always refer to the
hydraulic system installation drawings and the
electrical wiring diagram before removing or
disassembling associated parts.
Do not attempt to disconnect or remove any
hydraulic line before reading and
understanding all text concerning the
system hydraulics. In most cases,
disassembly of the machine will be obvious
from the drawing.
DO NOT modify this ariel platform without
prior written consent of Snorkel Engineering
Department.
Modification may void the warranty,
adversely affect stability, or affect the
operational characteristics of the ariel
platform.
When disassembling or reassembling
components, complete the procedural steps in
sequence. Always check your work to assure that
nothing has been overlooked.
S2755RT, S2255RT – 13715-2 Rev C page 7
CAUTION
CAUTION

The following list is a gentle reminder when
disassembling or assembling the machine.
üAlways be conscious of weight.
üNever attempt to lift heavy objects without the aid of
a mechanical device.
üDo not allow heavy objects to rest in an unstable
condition.
üAlways make sure work platform is in stowed
position - blocked or the weight removed by a
suitable lifting device before disconnecting the
hydraulic hose from the motor/pump unit to the lift
cylinder.
üWhen raising a portion of the machine, be sure that
adequate blocking is properly positioned - Do not
depend on lifting device to hold and secure weight.
üIf a part resists removal, check to see if all fasteners,
electrical wiring, hydraulic lines, etc., have been
removed or that other parts are not interfering.
Parts should be thoroughly inspected before
restoring to service at the time of reassembly. Burrs,
nicks or scratches may be removed from machined
surfaces by honing or polishing with #600 crocus
cloth, followed by a thorough cleaning in an
approved cleaning solvent, and blown dry with
compressed air. Do not alter the contour of any part.
If this operation does not restore the part to a
serviceable condition, replace the part.
Replace all O-rings, seals, and gaskets at
reassembly. Use new roll pins or cotter pins. Dip all
packing rings and seals in hydraulic oil before
reassembling in cylinder and manifold installations.
Replace any part having imperfect threads. In
general, units that have been disassembled can be
reassembled by reversing the order of disassembly.
Remember that the service life of a machine can be
increased by keeping dirt and foreign materials out
of the vital components. Precautions have been
taken to safeguard against this; shields, covers,
seals and filters are provided to keep air and oil
supplies clean; however, these items must be
maintained on a scheduled basis in order to function
properly.
At any time air or oil lines are disconnected, clean
surrounding areas as well as the opening and
fittings themselves. As soon as a line or component
is disconnected, cap or cover all openings to
prevent the entry of dirt or foreign materials.
New parts should remain in their container until they
are ready to be used.
Clearly mark or tag hydraulic lines and electrical
wiring connections when disconnecting or removing
them from unit. This will assure that they are
correctly reinstalled.
Proper assembly is critical to the successful
rebuilding of any unit. Carefully inspect any parts
which are to be reused. If in doubt, replace.
“SAFETY FIRST” is a good slogan.
Replace any guards and protective devices that
have been removed to carry out maintenance and
repair work.
■Maintenance schedules
Snorkel has established a Preventive Maintenance
Schedule that includes:
üDaily Maintenance (Operator’s Inspection)
ü90 Day or 150 Hour (frequent) Maintenance
üYearly or 500 Hour (annual) Maintenance,
These schedules should ensure the detection of any
defective, damaged or improperly secured parts
and provide information regarding lubrication and
other minor maintenance items.
The Maintenance Schedule following, outlines the
requirements of these maintenance checks for each
time interval. The Operator’s Pre-operational
inspection must be performed by a trained operator.
All other maintenance and inspections must be
performed by a trained service technician only.
Note that the 90 Day or 150 hour (frequent) and
yearly or 500 hour (annual) Maintenance, require
use of the Preventive Inspection Maintenance
Checklist to pinpoint all inspection items. Retain a
copy of these forms for your records.
They also require that all placards and decals on the
unit are to be inspected.
All placards and decals must be in place and legible.
Use the placards installation drawing and parts
listing in the repair parts section 1 of this manual to
check these placards and decals.
Snorkel recommends that you make additional
copies of the Preventive Inspection Maintenance
Checklist forms for your use in performing these
Failure to perform the Preventive
Maintenance at the intervals outlined in the
Maintenance Schedule may result in a unit
being operated with a defect that could result
in INJURY or DEATH of the unit operator. DO
NOT allow a unit to be operated that has been
found to be defective.
Repair all defects before returning the unit to service
page 8Rev C S2755RT, S2255RT – 13715-2
Maintenance Information
DANGER

■Daily Maintenance
S2755RT, S2255RT – 13715-2 Rev C page 9
Maintenance Information
❑Pre-operational inspection
(Set the KEY SWITCH to off before starting this inspection).
COMPONENTS SERVICE REQUIRED
Rough terrain scissor interlock tests Perform tests to ensure the system is functioning
Fuel level Visually inspect
Fuel filter (diesel engines only) Visually inspect (condition)
Fuel leaks Visually inspect (hoses, connections, etc)
Engine oil Check oil level (between dipstick lines)
Engine coolant Check fluid level and radiator hoses
Radiator cap Visually inspect (installation)
Air Filter Check condition (gauge)
Platform entrance gate Visually inspect (installation, operation)
Wiring harness and connectors Visually inspect (installation, condition)
Battery terminals Visually inspect (installation)
Battery fluid level Visually inspect (covers plates)
Hydraulic oil reservoir cap Visually inspect (installation)
Hydraulic oil level Check fluid level (at line on side of tank)
Hydraulic oil leaks Visually inspect (hoses, tubes)
Tires and wheels Visually inspect (condition)
Bolts and fasteners Visually inspect (looseness)
Structural damage & welds Visually inspect (weld cracks, dents)
Platform guardrails Visually inspect (condition)
Lanyard anchor points (option) Visually inspect (condition)
Bubble level indicator Visually inspect (condition)
Guides, rollers and slides Visually inspect (condition)
Non slip tread grip Visually inspect (condition)
Wrist support Visually inspect (condition)
Operator manual Visually inspect (that the manual is in the holder)
Placards, decals and operators manual Visually inspect (installation and condition)
START THE ENGINE FROM THE BASE CONTROL PANEL TO CHECK THE FOLLOWING
Charging system Check condition (gauge)
Ground controls Actuate and visually inspect for proper operation
Emergency lowering (from the ground) Check operation (causes correct motion)
Platform controls Actuate and visually inspect for proper operation
Flashing light Check operation
Emergency lowering (from the platform) Check operation (causes correct motion)
Safety prop Check operation
Parking brakes Check operation
Optional items Check operation

page 10 Rev C S2755RT, S2255RT – 13715-2
Maintenance Information
■90 Day or 150 Hour Maintenance
(Trained Service Technician)
COMPONENTS SERVICE REQUIRED RECOMMENDED LUBRICANT OR
FURTHER INSTRUCTIONS
Daily maintenance Perform maintenance as per schedule
Preventive inspection
maintenance checklist
Perform inspection, complete form Retain copy of checklist
Placards & decals inspection Inspect using drawing and parts listing
in section 1 (repair parts)
Replace any missing or
unreadable decals/placards
Door hinges and latches Lubricate SAE 10W oil or spray lube
Tie rods Check pin keeper and condition DO NOT lubricate
Steer cylinder ends Check pin keeper and condition DO NOT lubricate
Batteries Check specific gravity 1.260/1.275 at 80° F.
Platform lift capacity Check if platform can lift maximum
load
Platform lift/lower speeds Check smooth operation and speeds
Hydraulic return filter Check condition Replace if dirty
Engine RPM Check for proper RPM Low = 1750rpm High = 3000rpm
Engine oil and oil filter Replace per engine manufacturer’s
interval
See engine manufacturer’s
owners manual
Engine fuel filter Check condition Replace every 6 months or if dirty
Slide pads Check condition DO NOT lubricate
Scissor arm bearings Check condition DO NOT lubricate
■Yearly or 500 Hour Maintenance
(Trained Service Technician)
COMPONENTS SERVICE REQUIRED RECOMMENDED LUBRICANT OR
FURTHER INSTRUCTIONS
90 day or 150 hour maintenance Perform maintenance per schedule
Hydraulic oil reservoir Clean and replace fluid Shell Tellus 32 or similar
Hydraulic return filter Replace After 1st. 50 hours, thereafter
at recommended interval
Hydraulic pressures Check pressures
Platform controller Check operation
Base controls Check operation

■Lubricants
Specific lubricants as recommended by Snorkel,
should be used in maintaining your unit. If in doubt
regarding the use of lubricants other than those
listed, contact Snorkel.
❑Pressure gun application
Service all fittings as indicated in the Maintenance
Schedule and lubrication drawing. Wipe away all
excess lubricant from exposed surfaces. Over
lubrication can collect dirt and foreign matter which
acts as an abrasive. Lubrication of accessory
equipment should be in accordance with the
manufacturer’s recommendations.
NOTE
Any time the work platform is elevated to perform
maintenance work, properly position the safety bar
as outlined on the safety prop decal.
DO NOT reach through scissors mechanism
unless the safety prop is properly
positioned.
INJURY or DEATH could occur if the
platform is not supported by the safety prop
and should suddenly drop onto personnel
performing maintenance work under the
raised platform.
❑Lubrication
Refer to the above lubrication drawing for location
of the following item numbers.
❑King pins (Item 1)
King pin bearings are self lubricating. Check for
signs of damage and excessive wear as outlined in
the maintenance schedule.
DO NOT lubricate
❑Tie rods (Item 2)
Tie rod bearings are self lubricating. Check for
damage and excessive wear as outlined in the
maintenance schedule.
DO NOT lubricate
❑Steer cylinder end (Item 3)
Steer cylinder ends are self lubricating. Check for
damage and excessive wear as outlined in the
maintenance schedule.
DO NOT lubricate
❑Wheel bearings
Drive wheels (Item 4)
Wheel bearings used on drive wheels are sealed
bearings and do not require lubrication.
S2755RT, S2255RT – 13715-2 Rev C page 11
Maintenance Information
10
10
5
11
6
8
1,2,3,4
Includes center
pivot pins
Inside compartment
other side
Inside
cabinet
Inside
compartment
other side
7
4
9
9
The drawing locates the lubrication points of the machine
DANGER

❑Engines (Item 5)
Other than daily Operator’s maintenance outlined in
the Daily Inspection and Maintenance schedule, all
other engine maintenance information is found in
the manufacturer’s instruction manual.
Refer to the engine manufacturer’s instruction
manual or consult your local engine service
representative if engine adjustments or repairs are
needed.
The engine MUST be operated in accordance
with manufacturer’s instructions and
serviced at recommended intervals.
Failure to do so could result in the loss of
your engine warranty and repair of any failure
resulting from improper maintenance could
be at your own expense.
❑Hydraulic oil reservoir (Item 6)
The fluid level should be kept level with the indicator
line on the side of the reservoir and should be
checked with all cylinders fully retracted and the
platform in the stowed position.
The interior of the reservoir should be wiped out and
cleaned each time the hydraulic oil is changed. The
reservoir filler/breather cap should be removed and
the cap breather cleaned yearly with Kerosene, Fuel
Oil or other solvent.
It is absolutely necessary that only new, clean
hydraulic oil is added.
If it becomes necessary to add or use an oil
other than the recommended fluid, it is
important that it be compatible and
equivalent to the factory fill. Local oil
suppliers can generally furnish this
information.
If questions still remain, contact Snorkel for further
information.
❑Return filter (Item 7)
On scissorlift models, the hydraulic oil return filter is
mounted in the left hand tray assembly close to the
hydraulic oil reservoir.
The filter element is a throw-away type filter and
should be changed after the initial break-in period
(approximately 50 hours operation time).
The filter condition should be checked at the 90 day
or 150 hour Preventive Inspection Maintenance
interval or more frequently under extreme working
conditions.
When changing the filter element, the oil inside of
the filter element, should be examined for deposits
of metal cuttings, which if present, could indicate
excessive wear in some of the system components.
❑Door hinges and latches (Item 8)
Door hinges and latches may be lubricated as
required with spray lubrication or SAE 10W oil.
After lubricating, remove any excess oil or
over-spray so it will not collect dirt and debris.
❑Slide pads (Item 9)
Check slide pads for excessive wear and replace as
required.
Slide pads DO NOT require lubrication.
❑Scissor arm bearings (Item 10)
Scissor arm bearings are self lubricating. Check
bearings for signs of damage and excessive wear
as outlined in the maintenance schedule.
DO NOT lubricate scissor arm bearings.
■Batteries (Item 11)
The battery will have longer life if the water level is
maintained and it is kept charged. The unit will have
better starting characteristics with a fully charged
battery.
In cold weather the battery should be maintained at
full charge to keep from freezing. An extremely low
or dead battery can freeze in cold weather. Make
sure connections are clean and tight.
Check specific gravity of the battery per
maintenance schedule.
Make sure charging equipment is operating
properly.
Lead-acid batteries contain sulfuric acid
which will damage eyes or skin on contact.
When working around batteries, ALWAYS
wear a face shield to avoid acid in eyes.
If acid contacts eyes, flush immediately with
clear water and get medical attention.
Wear rubber gloves and protective clothing
to keep acid off skin, if acid contacts skin,
wash off immediately with clear water.
page 12 Rev C S2755RT, S2255RT – 13715-2
Maintenance Information
CAUTION
CAUTION
DANGER

Lead-acid batteries produce flammable and
explosive gases. NEVER allow smoking,
flames or sparks around batteries.
S2755RT, S2255RT – 13715-2 Rev C page 13
Maintenance Information
DANGER

Inspection Procedures Codes
(1) Weld cracks, dents and/or rust
(2) Installation
(3) Leaks
(4) Operation
(5) Condition
(6) Tightness
(7) Residue buildup
(8) See placards and decals inspection chart
CHECK OK üX
BASEFRAME
Structural (1)
Steering cylinders (2,3,4,6)
Steering cylinder fasteners and linkage (2,4)
Tires and wheels (5)
Articulating axles, if so equipped (2,4,5)
Tray side covers (2,5,6)
Torque drive wheel lug nuts 90 - 100 ft. lbs. (2,6)
Torque steer wheel lug nuts 90 - 100 ft. lbs. (2,6)
Right drive motor(s) (3,6)
Left drive motor(s) (3,6)
Drive cut-out
Back-up horn (4)
Guides, rollers and slides (2,4,5)
Parking brake(s) (3,4)
Free wheeling valve (3,4)
Emergency lowering valve (3,4)
Lowering alarm (4)
Battery disconnect switch (4)
Lubrication points
Cords and wire assemblies (2,5,6)
Hydraulic tubes and hoses (3,5)
Decals and placards (2,8)
OUTRIGGERS AND CONTROLS
Right front outrigger (2,3,4)
Left front outrigger (2,3,4)
Right rear outrigger (2,3,4)
Left rear outrigger (2,3,4)
Platform elevated, outrigger controls
DO NOT WORK (4)
Outriggers lowered, platform elevated
DRIVE WILL NOT WORK (4)
SCISSOR ARM ASSEMBLY
Structural (1)
Scissor arm pivot pins (2,5)
Lift cylinders and valves (2,3,4)
Safety bar (2,4,5)
Hydraulic tubes and hoses (3,5)
Wires and electrical cables (2,5)
Decals and placards (2,8)
CHECK OK üX
BASE CONTROL STATION
Key switch, main power ON - OFF (4)
Selector switch base/platform controls -
BASE CONTROLS SELECTED
PLATFORM CONTROLS DO NOT WORK (4)
Selector switch base/platform controls -
PLATFORM CONTROLS SELECTED
BASE CONTROLS DO NOT WORK (4)
Toggle switch, platform UP - DOWN (4)
Key start switch (4)
Toggle switch, glow plug, timing light
diesel units only (4)
Fuel select switch GAS - LP FUEL (4)
Emergency stop switch (4)
Hour meter (4)
Circuit breaker reset (4)
Lowering alarm (4)
Engine kill alarm (4)
Low oil pressure alarm (4)
High temperature alarm (4)
Lift enable light (4)
PLATFORM
Structural (1)
Guardrails properly installed and fastened (2,5)
Platform entrance chain or gate (2,5)
Wires and electrical cables (2,5)
Decals and placards (2,8)
Correct operators manual in document holder
Roll out platform deck extension (2,4,5,8)
PLATFORM CONTROLS
Drive speed - platform elevated
SLOW DRIVE SPEED ONLY (4)
Drive speed - platform lowered
DRIVES FAST or SLOW (4)
Joystick control -
DRIVE/STEER and PROPORTIONAL LIFT (4)
Toggle type selector switch -
HIGH SPEED/HIGH TORQUE (4)
Toggle type selector switch - LIFT/DRIVE (4)
Low engine oil light (4)
Engine start/kill switch (4)
Lift enable light (4)
Raised platform drive enable light, (4)
Emergency stop button (4)
Joystick interlock switch (4)
Interlocks (4)
page 14 Rev C S2755RT, S2255RT – 13715-2
Maintenance Information
■Preventive inspection maintenance
90 day or 150 hour checklist
OK OK - No Service Required Serial Number
✔Corrective Action Required
XCorrected, (Record description of corrective action).

S2755RT, S2255RT – 13715-2 Rev C page 15
Maintenance Information
Corrective Action Required
Note: If correction action is required on any item, attach sheet indicating problem and action taken.
All items have been properly checked and tested and found to be operating satisfactory or necessary corrective
action has been completed.
Inspected By: Date
CHECK OK üX
ENGINE
Air filter (5)
Belts and hoses (5)
Hydraulic pump (4)
Engine oil (5)
Engine START - STOP (4)
Electric throttle (4)
Engine coolant level (5)
Fuel system (3)
Fuel tank (3,5)
ELECTRICAL
Batteries (2,4)
Battery terminals (5,6,7)
Battery electrolyte level (5)
Battery specific gravity reading (5)
Wires and cables (2,5,6)
Battery disconnect switch (4)
Level sensor (2,4,5)
Motion warning alarm (2,4)
CHECK OK üX
HYDRAULIC RESERVOIR & RETURN FILTER
Translucent hydraulic oil reservoir (3,5)
Filler/breather cap (6)
Hydraulic fluid level (2,5)
Return filter (2,5,6)
Return filter element (5)
OPTIONAL EQUIPMENT
AC 110/220 volt outlet on platform (2,4)
Flashing light (2,4)

page 16 Rev C S2755RT, S2255RT – 13715-2
Maintenance Information
5.03
6.78
8.78
14.2
20.1
M3 x 0.5
M3.5 x 0.6
M4 x 0.7
M5 x 0.8
M6 x 1
M8 x 1.25
M8 x 1
M10 x 1.5
M10 x 1.25
Grade marking M8.8 M10.9 M12.9
LUBED
k=0.15
DRY
k=0.20
TORQUE (N.m)
NOM SIZE
X
PITCH
CLAMP
LOAD
W
(N)
PROPERTY CLASS 8.8
TENSILE
STRESS
AREA
As
2
(mm )
PROPERTY CLASS 10.9
CLAMP
LOAD
W
(N)
TORQUE (N.m)
DRY
k=0.20
LUBED
k=0.15
36.6
39.2
58.0
61.2
2 200
2 960
3 830
6 200
8 770
1.32
2.07
3.07
6.20
10.5
0.99
1.55
2.30
4.65
7.90
2 990
4 030
5 220
8 430
11 950
1.79
2.82
4.17
8.43
14.3
1.34
2.11
3.13
6.33
10.8
15 975
17 100
25 325
26 725
25.6
27.4
51
53
19.2
20.5
38.0
40.1
21 750
23 275
34 450
36 350
34.8
37.3
69
73
26.1
27.9
52
55
M12 x 1.75
M12 x 1.25
M14 x 2
M14 x 1.5
84.3
92.1
115
125
36 800
40 200
50 200
54 550
88
96
140
155
66
72
105
115
50 075
54 700
68 300
74 250
120
130
190
210
90
98
145
155
M16 x 2
M16 x 1.5
M20 x 2.5
M20 x 1.5
157
167
245
272
68 525
72 900
106 950
118 750
220
235
430
475
165
175
320
355
93 250
99 200
145 550
161 550
300
320
580
650
225
240
435
485
M24 x 3
M24 x 2
M27 x 3
M27 x 2
353
384
459
496
154 100
167 600
200 350
216 500
740
805
1 080
1 170
555
605
810
875
209 700
228 100
272 650
294 600
1 010
1 100
1 470
1 590
755
820
1 100
1 150
M30 x 3.5
M30 x 3
M30 x 2
M33 x 3.5
M33 x 2
561
580
621
694
761
244 900
253 150
271 050
302 950
332 200
1 470
1 520
1 630
2 000
2 200
1 100
1 140
1 220
1 500
1 640
333 250
344 500
368 850
412 250
452 050
2 000
2 070
2 210
2 720
2 980
1 500
1 550
1 660
2 040
2 240
M36 x 4
M36 x 3
M39 x 4
M39 x 3
817
865
976
1 028
356 600
377 600
426 000
448 700
2 570
2 720
3 320
3 500
1 930
2 040
2 490
2 630
485 300
513 800
579 750
610 650
3 490
3 700
4 520
4 760
2 620
2 780
3 390
3 570
M42 x 4.5
M42 x 3
M45 x 4.5
M45 x 3
M48 x 5
M48 x 3
1 121
1 206
1 306
1 398
1 473
1 604
489 300
526 400
570 050
610 250
642 950
700 150
4 110
4 420
5 130
5 490
6 170
6 720
3 080
3 320
3 850
4 120
4 630
5 040
665 850
716 350
775 750
830 400
874 950
952 800
5 590
6 020
6 980
7 470
8 400
9 150
4 200
4 510
5 240
5 610
6 300
6 860
■Torque chart

■Servicing STC Fittings
These units use Aeroquip STC hydraulic
fittings. Please read the following service
information before undertaking any
disassembly or service work on these
fittings.
Figure 1. - STC Components
NOTE:
An STC release tool kit is available from Snorkel,
Part Number 12791K
❑Disconnection
Remove pressure from the system before
attempting to disconnect these fittings in
order to avoid forceful ejection of the fitting,
which could result in personal injury.
1. Some fluid may still be in the system.
Minimise fluid loss by draining the fluid from
the system components prior to
disconnection.
2. Prior to disconnection, clean the area around
the fitting with a clean cloth, or, using an
airgun blow dirt and debris from the release
sleeve area.
3. To help avoid release sleeve tearing create a
release tool insertion gap by moving the
sleeve in the release direction. (see Figure
2). This can be done either by hand or by
using a single prong of the release tool.
4. Insert the release tool behind the release
sleeve D(see Figure 1) and pull the hose
assembly out from the mating STC connector
(leaving the release tool inserted will aid
disassembly). Do not pry on the fitting with
the release tool. (See Figure 2).
5. If a release tool is not available, a thin blade
screwdriver may be used (larger fitting sizes
may require two screwdrivers). Follow step 4
above.
Use with care - a screwdriver could damage
the release sleeve.
❑Inspection
1. STC Fittings are designed to be connected
and disconnected repeatedly without
replacing the O-Ring and Back-Up-Ring,
unless leakage or damage is observed.
2. Inspect mating STC fittings to ensure they
are in good condition, clean and free of
contaminants, nicks, scratches, flatspots etc.
3. Check the Wire Latch Ring C (see Figures 1
and 3) to ensure that it is in the proper
position in the female STC connector prior to
installation or reconnection.
4. Check the O-Ring Ato ensure it is not cut or
otherwise damaged prior to installation or
reconnection.
5. Check the Back-Up-Ring Bto ensure it is
not damaged. Verify that it is at the front of
the O-Ring groove prior to reconnecting the
fitting.
Figure 2. - STC Assembly
If leakage is observed, and the fittings are in
otherwise good condition, a seal
replacement kit must be installed or the
fitting must be replaced!
If seals are not replaced, a decrease in
system performance or damage to the
system components may result.
❑Installation and connection
1. Install the STC port connector into the
mating port carefully. Follow recommended
installation procedures for the applicable port
fittings.
S2755RT, S2255RT – 13715-2 Rev C page 17
Maintenance Information
IMPORTANT
DANGER
CAUTION
A
Female Port Connector
Female Components
Male Hose Fitting
BCD
A. - O-Ring
B. - Back-Up Ring
C. - Wire Latch Ring
Male Components
D. - Release Sleeve
Composite Release Sleeve
Insert Release Tool or
Screwdriver Here;
Sleeve Should Move
To The left
Release
Direction

2. Align the STC fitting on the hose assembly
with the STC connector, and push the hose
fitting into the mating STC connector until
you feel a definite snap and a solid stop.
Pull back on the hose assembly to verify that
a proper connection has been made. An
improper connection may result in a sudden
assembly failure with a potential for personal
injury.
❑Seal replacement instructions
1. Inspect the O-Ring Ain Female STC
connectors.
2. Carefully remove the O-Ring Aand Back-Up
Ring Bwith an O-Ring pick without
damaging the interior surfaces of the fitting.
3. Inspect the interior surfaces and groves of
the fitting and ensure they are free of foreign
material, nicks, scratches, or dents.
Any damaged O-Ring must be replaced with a
new O-Ring and Back-Up Ring using only
genuine Aeroquip parts.
Any damaged fitting must be replaced with a
new part to avoid leakage.
Figure 3. - Female Port Connector
4. If undamaged, clean the fitting and install
Back-Up Ring Bat the front of the O-Ring
groove.
5. Install the new O-Ring Ain the groove
behind the Back-Up Ring Band inspect to
ensure O-Ring and Back-Up Ring are secure
in the groove.
Lubricate the O-Ring with a lubricant which is
compatible with the system fluid.
Inspect to verify proper location of O-Ring in
the connector (See Figure 3). Leakage could
occur if installed incorrectly.
6. If the Wire Latch Ring Cis damaged,
carefully remove the Latch Ring without
damaging the interior surfaces of the
connector.
7. Carefully insert the new Wire latch Ring in
the Latch Ring groove. The Latch Ring
should be able to rotate in the groove.
8. Inspect and reinstall the connector. Follow
the installation / connection steps for
reinstallation.
page 18 Rev C S2755RT, S2255RT – 13715-2
Maintenance Information
IMPORTANT
O-Ring
Back-Up Ring
Wire Latch Ring
IMPORTANT
CAUTION