Waterous Eclipse ES TC20 Installation guide

Read through the safety information and oper-
ating instructions carefully before using your
Waterous Eclipse™ CAFSystem.
Table of Contents
Safety Information........................................................2
General Description.....................................................3
Standard Items Furnished / Shipped Loose...................4
General Information.....................................................5
Auto Sync Control Panel................................................5
Unload / Fixed / Auto Control Valve............................5
CAFS Nozzle / Flow Rate / Hose Combinations............5
Nozzles
.......................................................................5
Foam Concentrate Ratios
...........................................5
Hose............................................................................5
Operation ......................................................................6
Water Pumping Operations............................................6
Advantus Foam Operation (Optional) ............................6
Foam Solution Operations .............................................7
Compressed Air Foam Operations ................................8
Compressed Air Only.....................................................8
Shut Down Procedure..................................................9
Compressed Air Foam Operations ................................9
Compressed Auto Shut Down ....................................9
Service and Maintenance............................................9
Poly Chain Replacement and Adjustment...............10
Calibration - Control Air Circuit................................12
Troubleshooting Guide..............................................13
Control Air Circuit Function......................................16
Eclipse ES CAFSystem Operation and Maintenance Instructions
Allcontent inthis instructionis propertyof the Waterous Company. Instructions subjecttochange without notice.
Waterous Company 125 Hardman Avenue South, South St. Paul, Minnesota 55075 USA [phone]
Instructions subject to change without notice.
Visit us at www.waterousco.com
Eclipse ES Op-
eration &
Maintenance
Eclipse ES CAFSystem
Eclipse ES CAFSystem Operation and Maintenance
Form No.
F-1031
Section
2119
Issue Date
04/07/03
Rev. Date
10/17/18

F-1031, Section 2119
Page 2 of 24
Death or serious personal injury might occur if proper
operating procedures are not followed. The pump op-
erator, as well as individuals connecting supply or
discharge hoses to the apparatus must be familiar
with these pump operating instructions as well as
other operating instructions and manuals for the ap-
paratus, water hydraulics and component limitation.
Pressure Hazard. May result in personal injury.
Prior to connection or removal of hoses, caps or
other closures with pump intake or pump discharge
connections, relieve pressure by opening drains or
bleeder valves. Bleeder valves should also be used
while filling a hose connected to an intake with water.
Scalding Water Hazard. May result in serious burns.
When operating the pump, be sure to open at least
one discharge valve slightly to prevent the pump from
overheating. If the pump runs for a few minutes com-
pletely closed, it may heat the water enough to scald
someone when the valve is opened. Overheating can
damage the packing, seals and other pump parts. If
the apparatus builder has installed a by-pass system
or other provision designed to prevent overheating,
opening a discharge valve may be unnecessary.
Hose Pressure Hazard.
May cause serious personal injury.
Use only fire hose that is rated at 200 PSI (12.8 bar)
or higher working pressure.
Air Discharge Hose and Nozzle Heat Hazard.
May cause severe burns.
Hose and nozzle used for air discharge will be-
come hot due to the hot air flowing through it.
Wear protective gloves. Also be prepared for noz-
zle reaction when air discharge and nozzle are
opened.
Air Source Hazard.
May cause serious personal injury or death.
Do not use the compressed air foam unit as an air
source for any self-contained breathing apparatus
(SCBA) or any breathing air supply.
“Slug Flow” Hazard.
May cause personal injury to the hose operator.
Foam concentrate must be present before the pres-
ence of compressed air to prevent the condition known
as “slug flow.” If foam concentrate is not present, un-
mixed water and air will be discharged through the
nozzle in an erratic matter.
Pressure Hazard.
May cause serious personal injury.
Discharge outlets that are capped, hose lines that are
valved and charged and the air compressor sump
may contain compressed air. Relieve all pressure be-
fore attempting to remove any caps, fittings, nozzles
or to perform maintenance to prevent serious injury.
Nozzle Reaction Force Hazard.
May cause personal injury to the hose operator.
Nozzle reaction force is significantly increased at the
time the nozzle is opened in compressed air foam op-
eration. Open CAFS nozzles slowly.
NOTICE
When towing, disconnect the drive shaft that con-
nects the pump transmission’s rear output (coupling)
shaft to the vehicles differential. Failure to do so may
result in damage from lack of lubrication.
WARNING
!
WARNING
!
WARNING
!
WARNING
!
WARNING
!
WARNING
!
WARNING
!
WARNING
!
WARNING
!
Safety Information
Read through the safetyinformation and operating instructions before using your Waterous Fire Pump.

F-1031, Section 2119
Page 3 of 24
The air compressor system used by the Waterous
EclipseES is a Pneumax / GHH Rand model CF75DG,
oil flooded rotary screw type. Rotary screw air compres-
sors are very common in industrial applications. This type
of compressor injects oil into itself, where it lubricates,
seals, cools and silences the compressor. The oil is then
entrained into the air discharge from the compressor. This
air/oil mixture is discharged into the sump tank where
most of the oil separates from the air. The oil is then sent
via hydraulic hose to a combination filter/cooler unit. It is
filtered and cooled to remove compression and friction
heat, and sent to the oil injection port on the compressor.
The cycle is then repeated.
The oil mist that remains in the airstream is recovered by
an air/oil separator system. This system recovers the oil
mist in a spin-on cartridge that has a siphon tube that
picks-up the recovered oil for return to the air compressor.
The compressor’s air output is controlled by a modulating
inlet valve. The inlet valve is opened and closed by the
Auto Sync pressure control system.
The compressor cooling system circulates water from the
fire pump through the compressor oil cooler and back to
the pump inlet to remove heat from the compressor oil
system. The compressor oil temperature is typically in the
200 - 225F range. Under maximum running condition, the
compressor oil temperature may reach 235F. If the oil
temperature exceeds 235F, check the water supply, wa-
ter strainer, pump prime, restrictions in the cooling water
system and for low oil level in the sump.
The air compressor (air end) is driven via a PolyChain
and pneumatic clutch through the pump transmission uti-
lizing an extended impeller shaft. It is important to en-
sure that there is a water supply from the fire pump
whenever the compressor is running. Pump and/or
compressor damage may result from running the
pump without adequate water flow.
General Description

F-1031, Section 2119
Page 4 of 24
Standard Items Furnished
Installed On Compressor
Components Installed Remotely from the
Compressor on the Vehicle by the OEM.
Ref. No.
Description
Ref. No.
Description
1
Fire Pump (Separately Mounted for P.T.O.
Applications
16
Air/Oil Separator
2
Fire Pump Transmission or P.T.O
17
Oil Cooler
3
Pneumatic Clutch
18
Air Filter and Elbow
4
PolyChain Belt
19
Compressor Oil Sump
5
Belt Adjustment Hardware
19A
Safety Relief Valve
6
Air Inlet Valve
20
Oil Temperature Gauge
7
Auto Balancing Valve
21
Oil Temperature Sensor
8
Air Clutch Solenoid
22
Oil Cooler Water Strainer and Flush Valve
9
Air Compressor
23
Electric Auto-Sync Control Panel
10
Electrical Relay Panel
24
Air System Operation Panel Plate
11
Balance Trim Valve (BTM)
25
CAFS Hose Specification Plate
12
Air Inlet Trim Valve (AITV)
26
Clutch Air Regulator (P.T.O. Applications Only)
15
#4 JIC Connection for Oil Scavenger Line
NOTE: Unit shown with belt cover removed.

F-1031, Section 2119
Page 5 of 24
Unload / Fixed / Auto Control Switch
Once the compressor’s clutch is engaged, the Unload /
Fixed / Auto control switch allows the operator to select
between three air compressor pressure modes:
1. Unload (Standby) - The air compressor essen-
tially idles, producing a minimal pressure (40 PSI)
to maintain compressor oil flow. The compres-
sor’s clutch shall only be engaged when the Un-
load / Fixed / Auto switch is in the “Unload” posi-
tion and master air pressure gauge reads “0” PSI.
2. Fixed - air pressure is maintained at a preset pres-
sure setting (150 PSI).
3. Auto - air pressure matches water discharge pres-
sure.
NOTE: For an explanation of Control Air Circuit func-
tion during each operation mode, see Page 16.
Hose Pressure Hazard.
May cause serious personal injury.
Use only fire hose that is rated at 200 PSI or higher
working pressure.
CAFS Nozzle / Flow Rate / Hose Com-
binations
Nozzles
Compressed air foam can be discharged through various
types and sizes of nozzles. Fog nozzles break-down the
bubble structure of the foam, resulting in a “wetter” or re-
duced expansion foam. Similarly, when utilizing smooth
bore nozzles with a given hose diameter, smaller tips will
discharge “wetter” foam.
Foam Concentrate Ratios
Proportioner settings of 0.2% and 0.3% are typically ade-
quate to produce compressed air foam that is formed in a
hoseline and used on Class A combustibles. Higher set-
tings will result in a “drier” appearing foam. Lower settings
may result in “slug flow” or discharge pulsation caused by
insufficient foam concentrate in the solution to form foam
in the hoseline.
For Class B or other type foam ratio settings, follow in-
structions provided by the foam concentrate manufac-
turer.
Hose
Utilize fire hose that is rated by the hose manufacturer for
use with CAFS. Since the foam is formed during its transition
through the hoseline, it is important to utilize the minimum
recommended hose lengths, unless a static mixer is used.
There issignificantly less friction and head loss withcom-
pressed air foam as compared to water or foam solution;
therefore, effectivefire streams can be achieved with longer
hose lays. Refer to the SuggestedGuidelines for the Produc-
tion of Mid-Range Compressed Air Foam on Page 6.
NOTE: CAFS has the ability to produce a foam of
shaving cream consistency. While this type of foam is
highly stable and possesses a long drain time, it is
essential to ensure that the foam will release suffi-
cient water to extinguish a fire in a direct attack situa-
tion. This type of foam is typically suited for defensive
operations such as exposure protection, barriers or
fuels pretreatment.
WARNING
!
General Information
Electric Auto-Sync Control Panel
IL3012

F-1031, Section 2119
Page 6 of 24
Typical CAFS Flow - Hand Line
Hose Diameter
Tip Size
Foam Type
Water Flow (GPM)
Air Flow (CFM)
Discharge
Pressure (PSI)
Min. Hose Length
1”
1/2”
Wet
20
20
100
35’
1”
3/4”
Wet
30
20
100
35’
1”
3/4
Fluid
15
45
100
35’
1-1/2”
15/16”
Wet
80
40
100
100’
1-1/2”
1-3/8”
Fluid
30
110
100
100’
1-3/4”
15/16”
Wet
90
50
100
100’
1-3/4”
1-3/8”
Fluid
35
130
100
100’
2-1/2”
15/16”
Wet
120
60
100
150’
2-1/2”
1-3/8”
Wet
190
90
100
150’
2-1/2”
2”
Fluid
50
155
100
150’
Typical CAFS Flow - Portable Master Stream (Fed byOne 2-1/2” Line)
Hose Diameter
Tip Size
Foam Type
Water Flow
(GPM)
Air Flow (CFM)
Discharge
Pressure (PSI)
Min. Hose Length
2-/1/2”
1-3/8”
Wet
300
100
140
150’
2-1/2”
1-1/2”
Wet
340
120
140
150’
2-1/2”
1-3/4”
Wet
380
135
140
150’
2-1/2”
2”
Wet
400
140
140
150’
Wet Foam: Melted ice cream consistency - Fire Attack
Fluid Foam: Shaving cream consistency - Exposure Protection
A pumper equipped with an EclipseES compressed air
foam unit can be operated in several pumping modes; wa-
ter only, foam solution without compressed air, com-
pressed air foam and compressed air only for support op-
eration such as operating air tools, filling rescue air bags,
etc. It is possible to pump water from one discharge, foam
solution from another discharge while pumping com-
pressed air foam from yet another, or varying foam con-
sistencies (expansion ratios) from different discharges
simultaneously.
NOTE: Monitor compressor instruments during all op-
erations.
Water Pumping Operations
All unit operations begin with pumping water. See the fol-
lowing instruction for details on how to operate and pump
water from your Waterous fire pump:
· F-1031, Section 2117, Operation and Maintenance In-
structions for Waterous S100 Series Centrifugal Fire
Pumps or
· F-1031, Section 2109.1, Operation and Maintenance
Instructions for Waterous CX Series Centrifugal Fire
Pumps
For water only operations, the compressor switch should
be in the “OFF” position which disengages the air com-
pressor.
CAUTION
Overheating hazard.
May cause damage to the pump and/or compressor.
Running the unit without adequate water flow can
cause damage to the pump and/or the air compressor
system.
AdvantusFoam Pump Operation (Optional)
Upon power up, the software revision number will be dis-
played. The unit will then display the flow rate.
Because the conductivity measurement for a given per-
centage mix changes with the flow rate, the calibration
data is stored in an array. The array holds entries for the
various parameters at several different flow rates that are
in between flow rates entered in the data array.
Operation
Operator Interface Terminal

F-1031, Section 2119
Page 7 of 24
During normal operation, the OIT will display flow rate, percent mix, total water or total product.
SELECT
Selects data to display. The default is to display flow rate. Pressing the SELECT button will
scroll through the list, then wrap back around to the top of the list. The associated LED will
light to indicate what data is being displayed.
Flow Rate
Mix Percentage
Total Water
Total Product
Holding the SELECT button for more than two seconds will lock the display to the current po-
sition. Pressing the SELECT button again will unlock.
UP ARROW
When the Mix Percentage is displayed, the current mix setpoint will be displayed. Subse-
quent presses of the UP ARROW button will increase the Mix Setpoint by 0.1%. After a ten
second timeout, the display will return to the Flow Rate display.
DOWN ARROW
When the Mix Percentage is displayed, the current mix setpoint will be displayed. Subse-
quent presses of the DOWN ARROW button will decrease the Mix Setpoint by 0.1%. After a
ten second timeout, the display will return to the Flow Rate display.
Pressing both UP and DOWN simultaneously when the Total Water is displayed resets the
Total Water accumulator to Zero.
Pressing both UP and DOWN simultaneously when the Total Product is displayed resets the
Total Product accumulator to Zero.
Pressing both UP and DOWN simultaneously when the Flow Rate is displayed enters the
MANUAL mode of operation. See Manual Mode operation below.
Pressing both UP and DOWN simultaneously while in Mix % will go to the default %.
FOAM
Pressing the FOAM key will alternately start and stop the foam operation. When the control-
ler is running, the FOAM LED will be lit. The FOAM LED will blink when the motor control
output is active. The LED will be lit and not blink during the initial pump delay, or when the
system is on, but no water flow is detected.
If flow is detected, and one or both of the sensor inputs reads full scale, an open sensor error
will be flagged. The error SEn1 or error SEn2 will be displayed when the FOAM button is
pressed to indicated that the system is non-functional. In this case, the Manual Mode will be
functional and must be used.
MANUAL MODE
If the display is showing the flow rate and the two ARROW keys are pressed simultaneously,
the % MIX LED will be lit and the display will s how a default value of 2.0. Use the UP and
DOWN arrow keys to increase or decrease this value in steps of 0.5.
NOTE: Pump output is based on a theoretical ratio of foam to water at 50 GPM.
Pressing both ARROW keys again exits the MANUAL mode and stops the pump.
NOTE: Motor/Pump Assembly will operate in manual mode whether or not there is a
water flow. If the INJECT/BYPASS valve is in the INJECT position, foam concentrate
will be injected into the system, which will waste concentrate.
AUTO RUN
The system is equipped with an AUTO RUN feature. If the voltage (+12 or 24 VDC) is ap-
plied to position 1 on the terminal strip, it will have the same effect as pressing the Red
FOAM button. This will start the Foam system. The system will not inject foam until water is
flowing.
Foam Solution Only Operation
To begin using a foam solution, follow the instructions
above for Water Pumping Operations. After the pump is operating, turn on the foam pump to in-
ject foam concentrate into the water stream. See Page 6
for Advantus instructions or refer to FoamProSystems
2001 and 2002 Installation and Operation Manual, P/N L-
0825, if equipped with a Foam Pro System.

F-1031, Section 2119
Page 8 of 24
Compressed Air Foam Operations
The EclipseES CAFS design provides a minimum air
flow of 80-90 SCFM @ 125 PSI whether the pump oper-
ates from draft, tank or hydrant. At a typical engine idle
speed (600-700 RPM) and a pump transmission ratio of
2.27, the air compressor is capable of delivering 80-90
SCFM of 125 PSI air.
CAUTION
Operating Speed Limit.
May cause damage to the pump and/or air compressor.
The Eclipse ES compressor has a maximum operat-
ing speed of 8950 RPM. Do not allow the compressor
to run beyond 8950 RPM.
Compressor speed can be calculated by (Engine
Speed) x (Pump Transmission Ratio) x 2.5 .
CAUTION
Compressor Starting Hazard.
Starting compressor under pressure may cause
damage to the clutch and/or kill the engine.
Allow ample time for the compressor to bleed down
before engaging the compressor.
“Slug Flow” Hazard.
May cause personally injury to the hose operator.
Foam concentrate must be present before the pres-
ence of compressed air to prevent the condition
known as “slug flow.” If foam concentrate is not pre-
sent, unmixed water and air will be discharged
through the nozzle in an erratic matter.
To begin compressed air foam operations, follow the in-
structions above for Foam Solution Operations.
NOTE: Discharge pressure for compressed air foam
operations typically range between 80 and 120 PSI in
a flow state. Set the water discharge pressure at the
desired level.
NOTE: Compressed air foam does not have the hy-
draulic characteristics of plain water or foam solution;
therefore, standard pump hydraulics practices do not
apply to CAFS operations.
Nozzle Reaction Force Hazard.
May cause personally injury to the hose operator.
Nozzle reaction force is significantly increased at the
time the nozzle is opened in compressed air foam op-
eration. Open CAFS nozzles slowly.
After the pump and foam proportioner are operating, per-
form the following:
1. Place the Auto Sync control in the “UNLOAD” po-
sition and check master air pressure gauge reads
“0” PSI.
2. Engage the air compressor by moving the com-
pressor switch to the “ON” position.
3. Move the Auto Sync control to the “AUTO” posi-
tion. The air pressure should rise to within plus or
minus 5% of the water discharge pressure. The
Auto Sync system will balance the air and water
pressures plus or minus 5% throughout a range
of 40 PSI and up to 150 PSI .
4. Set proportioner at 0.2% - 0.4% for normal Class
A combustibles. Proportioning rates are dictated
by the type and brand of foam concentrate used
and the tactical objective.
5. Open desired discharge valve(s) to a half-open
position. The foam expansion ratio is set by con-
trolling the amount of foam solution entering the
discharge stream. High solution flows (discharge
valve fully open) restrict the amount of air admit-
ted and result in lower expansion or “wet” foam.
To produce higher expansion or “drier” foam,
simply reduce the amount of solution admitted by
gating back the discharge valve.
6. Open the air valve(s) to the desired discharge(s).
Adjust the solution flow (discharge valve setting)
to produce the desired foam consistency.
Compressed Air Only
For compressed air only operation, the fire pump must be
equipped with a discharge bypass system designed to re-
circulate booster tank water through the fire pump for
cooling. The bypass system must be in operation before
running compressed air only.
Air compressor cooling is via water from the booster tank
that is circulated by the fire pump through the compressor
cooler and returned back to the pump inlet. Compressed
air only operation time is limited by the amount of availa-
ble cooling water. The water in the booster tank will even-
tually become heat saturated and ineffective at cooling the
air compressor.
CAUTION
Overheating Hazard.
May cause damage to the pump and/or compressor.
Pump water may overheat when using the Eclipse
as an air compressor for an extended period of time.
Limit the amount of time the EclipseES is used as
an air compressor to prevent damage to the pump or
air compressor. Monitor the compressor temperature
gauge closely. Compressor system overheat is also
indicated by the panel mounted warning light system.
NOTE: Extended compressed air only operations ne-
cessitate connection of an external water source to
the pump inlet and closing of the tank to pump valve
for proper compressor cooling.
WARNING
!
WARNING
!

F-1031, Section 2119
Page 9 of 24
After engaging the fire pump, ensure that the water pres-
sure rises on the panel mounted master pressure gauge.
1. Place the Auto Sync control in the “UNLOAD” po-
sition and check master air pressure gauge reads
“0” PSI.
2. Engage the air compressor by moving the com-
pressor switch to the “ON” position.
3. Move the Auto Sync control to the “FIXED” posi-
tion. Air pressure will rise to the preset pressure
setting on the air compressor, approximately 150
PSI (10 bar) with the engine throttled-up.
Air Source Hazard.
May cause serious personally injury or death.
Do not use the compressed air foam unit as an air
source for any self-contained breathing apparatus
(SCBA) or any breathing air supply.
4. For lower operating pressures: Move the Auto
Sync controls to the AUTO position and use the
engine throttle to control the air pressure.
5. Connect the air discharge hose to the fitting on the
pump operator’s panel and open the air supply
valve.
Compressed Air Foam Operations
To shut down compressed air foam operations, follow the
instructions below:
1. Close air valve(s) to the discharge(s).
2. Turn off foam proportioner.
3. Flow clear water through discharge hose(s) until
no bubbles are present.
4. Close discharge valve(s).
5. Place the Auto/Sync control in the “UNLOAD” po-
sition.
6. Move the air compressor switch to the “OFF” po-
sition.
After the compressor is disengaged, the system will vent
itself, creating an audible hiss as compressed air is evac-
uated from the pressure vessel/sump.
The EclipseES air compressor is equipped with a com-
pressor overheat auto shut down. This auto shut down is
present to protect the compressor system from severe
damage if such an event should occur.
Compressor Overheat
If high oil temperature (250and above) is detected in the
compressor, the compressor clutch will disengage, the
compressor will stop and the Compressor Overheat light
will illuminate. The water pump and foam proportioning
systems will continue to operate and are not affected by
the compressor shut down. To re-start perform the follow-
ing:
1. Correct the fault, check oil level, cooling lines, re-
circulation line (if operating from tank), etc.
2. Reset auto shut down circuit by:
3. a.Placing the Auto Sync Control to “Unload”.
4. b.Move the compressor engage switch to the
“OFF” position.
The compressor can now be restarted by following the
standard instruction found in the “Operation” section. If for
any reason the fault has not been corrected when turning
the compressor engage switch “ON”, the auto shut down
will activate immediately and the Compressor Overheat
light will illuminate.
Pressure Hazard.
May cause serious personally injury.
Discharge outlets that are capped, hose lines that are
valved and charged and the air compressor sump
may contain compressed air. Relieve all pressure be-
fore attempting to remove any caps, fittings, nozzles
or to perform maintenance to prevent serious injury.
Excessive heat build-up and oil system contamination are
the most common causes of compressor system prob-
lems and premature wear. With proper operation and
maintenance, the compressor system should far outlast
the vehicle it is mounted on. Adherence to the following
guidelines will prevent potentially costly damage.
1. There is a sight gauge provided on the oil reser-
voir/sump tank. The oil level should be at approx-
imately half-way up the window. Check the oil on
level ground, prior to system start up (system
holds approximately 2 to 3 gallons of oil). If the
system has recently been run, wait 10 minutes af-
ter shut-down for the oil to stabilize before check-
ing the oil level. The compressor uses a non-
foaming hydraulic oil. This oil is classified by an
ISO standard as ISO 68 viscosity and is sold un-
der various trade names. Many are sold as an
“anti-wear” hydraulic oil and are available from
auto parts or lubricating oil suppliers.
WARNING
!
WARNING
!
Shut Down Procedure
Compressor Auto Shut Down (Overheat)
Service and Maintenance

F-1031, Section 2119
Page 10 of 24
2. The compressor needs to be cycled on a regular
basis. Run the compressor with air flowing,
weekly for 15-20 minutes. This will insure the
compressor rotors are coated with lubricant and
eliminate any moisture that may be present in the
compressor.
3. The oil should be changed after the first 30 hours
of system operation. After that, the oil should be
changed annually. There is a drain plug located at
the bottom of the oil cooler (see Oil Cooler Drain
Locations). The oil fill cap is located on top of the
sight gauge.
4. Change the compressor system spin-on oil filter
at the same time as the oil is changed.
5. Run the compressor for two minutes after chang-
ing the oil, then re-check the oil level and add oil
as necessary. Do not overfill.
6. Visually inspect the compressor oil system weekly
for signs of leaks.
7. A water strainer is installed on the oil/water cooler
inlet (see Oil Cooler Drain Locations). The water
strainer should be checked and cleaned weekly.
A plugged strainer will restrict cooling water and
cause overheating of the compressor system.
8. Check the air compressor PolyChaindrive for
damage or excessive wear semi-annually or more
frequently as dictated by the amount of use. Belt
tension may be checked by applying a 10-12 lb.
load to the belt, mid-span between drive and
driven sprocket. The belt should deflect .250 to
.313”.
Towing
When towing, disconnect the drive shaft that connects
the pump transmission’s rear output (coupling) shaft
to the vehicles differential. Failure to do so may result
in damage from lack of lubrication.
Poly Chain Replacement and Adjustment
9. The belt tension is set at the factory. No further
adjustment is required unless the belt is loosened
or removed to service other components.
When installing a synchronous belt, be sure it ten-
sioned adequately to prevent tooth jumping (rachet-
ing). Avoid extremely high tension which can reduce
belt life and possibly damage other drive components.
a. Remove the belt cover.
b. Loosen idler sprocket.
c. Turn the adjustment screw clockwise to
increse the belt tension. Adjust spring
height to 1-1/8 in.
d. For a new belt, set the tension to allow
1/4 - 5/16 inch of belt deflection when
10-12 lbs of force are applied at the cen-
ter of the greatest span. Do not over-
tighten the belt.
e. Apply loctite #242/243 (blue) to threads
and tighten the idler sprocket. Torque to
230 ft-lbs.
f. Install the belt cover.
Oil Cooler Drain Locations
Eclipse Belt TensionAdjustment
IL3499