Graco Viscount I Plus Operation manual

Instructions – Parts List
PLUS
ViscountrI Hydraulic Motor
Used as hydraulic drive for reciprocating pumps.
1500 psi (10 MPa, 102 bar) Maximum Hydraulic Input Pressure
Parts 236417, Series A, and 261466, Series A
Hydraulic Motor
Parts 236418, Series C, and 253608, Series A,
Hydraulic Reciprocator
US and Foreign Patents Pending
See also Manual 311211, High–FloRPumps
308330F
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
See page 22 for maximum working pressures.
03054
236417 Motor Shown
GRACO INC.ąP.O. BOX 1441ąMINNEAPOLIS, MNą55440-1441
Copyright 1994, Graco Inc. is registered to I.S. EN ISO 9001

2 308330
Table of Contents
Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Drawing and Parts List 18. . . . . . . . . . . . . . . . . . . .
Mounting Hole Layout 19. . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Phone Number 24. . . . . . . . . . . . . . . . . . . . . . . . . .
Symbols
Warning Symbol
WARNING
This symbol alerts you to the possibility of serious
injury or death if you do not follow the instructions.
Caution Symbol
CAUTION
This symbol alerts you to the possibility of damage to
or destruction of equipment if you do not follow the
instructions.
WARNING
EQUIPMENT MISUSE HAZARD
Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury.
DThis equipment is for professional use only.
DRead all instruction manuals, tags, and labels before operating the equipment.
DUse the equipment only for its intended purpose. If you are not sure, call your Graco distributor.
DDo not alter or modify this equipment. Use only genuine Graco parts and accessories.
DCheck equipment daily. Repair or replace worn or damaged parts immediately.
DDo not exceed the maximum working pressure of the lowest rated system component. This equip-
ment has a 1500 psi (10.5 MPa, 105 bar) maximum hydraulic input pressure.
DUse fluids and solvents which are compatible with the equipment wetted parts. Refer to the Tech-
nical Data section of all equipment manuals. Read the fluid and solvent manufacturer’s warnings.
DDo not kink or overbend hoses or use hoses to pull equipment.
DRoute hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose
Graco hoses to temperatures above 66_C (150_F) or below –40_C (–40_F).
DWear hearing protection when operating this equipment.
DDo not move or lift pressurized equipment.
DComply with all applicable local, state, and national fire, electrical, and safety regulations.

3308330
WARNING
SKIN INJECTION HAZARD
Spray from the gun/valve, leaks or ruptured components can inject fluid into your body and cause ex-
tremely serious injury, including the need for amputation. Fluid splashed in the eyes or on the skin can
also cause serious injury.
DFluid injected into the skin is a serious injury. The injury may look like just a cut, but it is a serious
injury. Get immediate surgical treatment.
DDo not point the gun/valve at anyone or at any part of the body.
DDo not put your hand or fingers over the spray tip/nozzle.
DDo not stop or deflect leaks with your hand, body, glove or rag.
DDo not “blow back” fluid; this is not an air spray system.
DAlways have the tip guard and the trigger guard on the gun/valve when spraying/dispensing.
DBe sure the gun/valve trigger safety operates before spraying/dispensing.
DLock the gun/valve trigger safety when you stop spraying/dispensing.
DFollow the Pressure Relief Procedure on page 7 if the spray tip/nozzle clogs and before clean-
ing, checking or servicing the equipment.
DTighten all fluid connections before operating the equipment.
DCheck the hoses, tubes, and couplings daily. Replace worn or damaged parts immediately. Do not
repair high pressure couplings; you must replace the entire hose.
DUse only Graco approved hoses. Do not remove hose spring guards, which help protect the hose
from rupture caused by kinks or bends near the couplings.
MOVING PARTS HAZARD
Moving parts can pinch or amputate your fingers.
DKeep clear of all moving parts when starting or operating the pump.
DBefore checking or servicing the equipment, follow the Pressure Relief Procedure on page 7 to
prevent the equipment from starting unexpectedly.

4 308330
WARNING
FIRE AND EXPLOSION HAZARD
Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and re-
sult in a fire or explosion and serious injury.
DGround the equipment and the object being sprayed. Refer to Grounding on page 5.
DIf there is any static sparking or you feel an electric shock while using this equipment, stop spray-
ing immediately. Do not use the equipment until you identify and correct the problem.
DProvide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid
being sprayed/dispensed.
DKeep the spray area free of debris, including solvent, rags, and gasoline.
DBefore operating this equipment, electrically disconnect all equipment in the spray/dispensing area.
DBefore operating this equipment, extinguish all open flames or pilot lights in the spray/dispensing
area.
DDo not smoke in the spray/dispensing area.
DDo not turn on or off any light switch in the spray/dispensing area while spraying/dispensing or
while operating if fumes are present.
DDo not operate a gasoline engine in the spray area.
DIf the hydraulic oil temperature approaches 130_F (54_C), shut off the motor and check the
hydraulic supply cooling system, filters, etc.
DKeep a fire extinguisher in the work area.
TOXIC FLUID HAZARD
Hazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin,
inhaled, or swallowed.
DKnow the specific hazards of the fluid you are using.
DStore hazardous fluid in an approved container. Dispose of hazardous fluid according to all local,
state and national guidelines.
DAlways wear protective eyewear, gloves, clothing and respirator as recommended by the fluid and
solvent manufacturer.

5308330
Installation
Grounding
WARNING
FIRE AND EXPLOSION HAZARD
Before operating the pump, ground the
system as explained below. Also read
the section FIRE AND EXPLOSION
HAZARD on page 4.
1. Pump: loosen the grounding lug locknut (W) and
washer (X). Insert one end of a 12 ga. (1.5 mm2)
minimum ground wire (Y) into the slot in lug (Z)
and tighten the locknut securely. Connect the other
end of the wire to a true earth ground. See Fig. 1.
Order Graco Part. No. 237569.
2. Hydraulic hoses and fluid outlet hoses: use only
electrically conductive hoses.
3. Hydraulic power supply: follow manufacturer’s
recommendations.
4. Spray gun/dispensing valve: obtain grounding
through connection to a properly grounded fluid
hose and pump.
5. Fluid supply container: according to local code.
6. Object being sprayed: according to local code.
7. Any pails used when flushing: use only metal,
grounded pails when flushing. Make firm metal-to-
metal contact between a metal part of the gun/
valve and the pail. Use the lowest possible
pressure.
8. To maintain grounding continuity when flushing or
relieving pressure, always hold a metal part of the
gun/valve firmly to the side of a metal pail, and
then open the gun/valve.
Fig. 1
WXZ
Y

6 308330
Installation
General
Connect the hydraulic motor (A) to the displacement
pump (B) as explained in your separate pump manual.
See Fig. 2.
Mount the pump to suit the type of installation planned.
Motor mounting plate kit 236714 (P) is available;
contact your Graco distributor for more information.
Be sure that your power supply is equipped with a
suction filter to the hydraulic pump and a system return
line filter of 10 micron size.
CAUTION
Keep the hydraulic system clean
To reduce the risk of damaging the hydraulic power
supply and motor, blow out all hydraulic lines with air,
flush thoroughly with solvent, and then blow out with
air again before connecting the lines to the hydraulic
motor.
Always plug the hydraulic inlets, outlets, and lines
when disconnecting them for any reason to avoid
introducing dirt and other contaminants into the
system.
Carefully follow the manufacturer’s recommendations
on reservoir and filter cleaning, and periodic changes
of the hydraulic fluid. The maximum water content of
the hydraulic oil is 1 percent.
Install the Drain Bottle
1. Push the drain hose (113) securely onto the
barbed adapter (112). See Fig. 2.
2. Position the holder (115) on a pump tie rod (C) and
secure with the hose clamp (116). Place the drain
bottle (114) in the holder.
3. Place the drain hose (113) in the drain bottle so it
hangs well down inside the bottle. Adjust the
position of the holder, if necessary.
03139
Fig. 2
113112
115
114
116
A
C
B
P

7308330
Operation
Pressure Relief Procedure
WARNING
SKIN INJECTION HAZARD
Fluid under high pressure can be in-
jected through the skin and cause seri-
ous injury. To reduce the risk of an injury
from injection, splashing fluid, or moving parts, fol-
low the Pressure Relief Procedure whenever you:
Dare instructed to relieve the pressure,
Dstop spraying,
Dcheck or service any of the system equipment,
Dor install or clean the spray tips.
1. Lock the spray gun/dispensing valve safety latch.
2. Close the supply line shutoff valve(s) first, then the
return line shutoff valve(s). In a multi-pump sys-
tem, do this at each pump to isolate the pumps.
3. Unlock the gun/valve safety latch.
4. Hold a metal part of the gun firmly to the side of a
grounded metal pail, and trigger the gun/valve to
relieve pressure.
5. Lock the gun/valve safety latch.
6. Open the pump outlet drain valve(s), having a
container ready to catch the drainage.
7. Leave the drain valve(s) open until you are ready
to spray/dispense again.
If you suspect that the tip/nozzle or hose is completely
clogged, or that pressure has not been fully relieved
after following the steps above, very slowly loosen the
tip guard retaining nut or hose end coupling to relieve
pressure gradually, then loosen completely. Now clear
the obstruction.
Startup
Before each use, check the hydraulic fluid level and
add fluid as necessary to fill the lines.
To start the pump, turn on the hydraulic power supply.
Open the return line shutoff valve first,then open the
supply line shutoff valve.
WARNING
Hydraulic Oil Temperature
If hydraulic oil becomes too hot, it can reach its
flash point and cause a fire. Operating at too high
an oil temperature can also cause faster motor seal
wear and leakage. The recommended hydraulic oil
operating temperature is 80–115_F (27–45_C). If
the oil temperature approaches 130_F (54_C), shut
off the motor and check the hydraulic oil supply
cooling system, filters, etc. Clean or repair as
needed.
Always use Graco-approved Hydraulic Oil or
equivalent. Order Part No. 169236, 5 gal. (19 liter)
or 207428, 1 gal. (3.8 liter). Do not substitute a
lower grade oil or one with a lower flash point.
The equivalent is a premium, ISO grade 46
petroleum-based hydraulic oil containing rust and
oxidation inhibitors and anti-wear agents. Before
using any other type of oil in this equipment,
contact your Graco distributor. Unauthorized use
of lesser grade oil or substitutes will void the
warranty.
Shutdown & Care
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure at left.
Relieve the pressure. Always shut off the supply line
shutoff valve first,and then the return line shutoff
valve. This is to prevent overpressurizing the motor or
its seals. When starting the hydraulic system, open the
return line shutoff valve first.

8 308330
Troubleshooting
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 7.
Relieve the pressure before you check or service any
system equipment.
Check all possible problems and solutions before
disassembling the motor.
Problem Cause Solution
Reciprocator stops running. Worn valve or valve balls (3);
broken valve spring (18).
Repair valve. See page 13.
Broken trip rod (17), spring (12) or
retainers (11).
Replace parts. See page 13.
Poor performance or reduced effi-
ciency.
Worn piston seals (5, 6, 7). Replace seals. See page 13.
Oil leaking down extension rod. Worn o-ring (117, 121, or 122) in
oil deflector.
Replace o-ring. See page 9.
Oil leaking around cylinder. Worn cylinder o-rings (2). Replace o-rings. See page 13.
Loose tie rods (37). Tighten nuts (106). See page 9.
Oil leaking around inlet or return
tube fittings.
Loose fittings or worn fitting
o-rings.
Tighten or replace fittings (31, 34,
38). See page 13.
Excessive oil in drain bottle, or
bottle needs frequent emptying.
Worn seals in bottom cylinder cap. Replace seals (2, 15, 14 and 49).
See page 13.
Service
Tools Required
DSet of allen wrenches
DSet of socket or box wrenches
DAdjustable wrench
DTorque wrench
DSpanner wrench
DO-ring pick
D10–24 unc–2b tap
DVise
DShallow metal or plastic pan (approx. 12 x 20 in.)
DRepair Tool 189305
DThread lubricant
DLithium-base grease
DFresh Loctiter242 and 609 thread sealants and
LoctiterPrimer T or Perma-Locr115 thread seal-
ant and Perma-BondrSurface Conditioner I
DChlorinated solvent
Disconnecting the Hydraulic Motor
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 7.
1. Relieve the pressure.
2. Disconnect the hydraulic hoses and plug all hy-
draulic connections and hoses.
CAUTION
Keep the hydraulic system clean
Always plug the hydraulic inlets, outlets, and lines
when disconnecting them for any reason to avoid
introducing dirt and other contaminants into the
system.
3. Disconnect the hydraulic motor from the displace-
ment pump as explained in your separate pump
manual.
4. Pull the drain hose (113) off the barbed adapter
(112).
Reconnecting the Hydraulic Motor
1. Reconnect the drain hose (113) to the barbed
adapter (112).
2. Reconnect the hydraulic motor to the displacement
pump as explained in your separate pump manual.
3. Unplug all hydraulic connections and hoses.
Reconnect the hydraulic hoses.

9308330
Service
Motor Disassembly
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 7.
1. Relieve the pressure.
2. Stand the motor upright. Remove the four screws
(104) and washers (105) holding the motor cap
(102) to the base (103). Lift the reciprocator (101)
off the base (103) and lay it in a pan. Remove the
large o-ring (108) from the base (103). See Fig. 3.
3. For model 236417 only, remove the cotter pin (111)
and unscrew the extension rod (110) from the
reciprocator displacement rod (9). See Fig.
NO TAG.
4. Remove deflector.
Model 236417, pull the oil deflector (109) off the
extension rod (110). Remove the two o-rings (117)
from the rod and deflector.
Model 261466, remove the retaining o–ring and
slide the deflector off the rod.
5. Unscrew the nuts (106) and washers (105) from
the reciprocator tie rods (37) and pull the motor
cap (102) off the reciprocator (101). Remove the
o-ring (107) from the cap.
6. Clean and inspect all parts. Replace parts as
necessary. To service the reciprocator (101), refer
to page 13.
03056
Fig. 3
1Grease.
104
105
102
101
103
108
120
34
1
112
Model 236417

10 308330
Service
Motor Reassembly
1. Grease the o-ring (107) and install it on the motor
cap (102). Install the motor cap, washers (105)
and nuts (106) on the reciprocator tie rods (37).
Torque the nuts to 29–31 ft–lb (39–42 NSm). See
Fig. 4.
2. Connect deflector.
Model 236417 (see Figs.4 and 5), grease the two
o-rings (117). Install one of them in the inner
groove of the oil deflector (109). Slide the deflector
onto the extension rod (110), beveled side facing
up, until it seats. Slide the other o-ring (117) onto
the rod so it contacts the top of the deflector.
Model 261466 (see Figs. 4 and 6), grease the
thinner o–ring (121) and install on the displacement
rod (9). Slide the deflector onto the displacement
rod, beveled side facing up, until it seats. Install
the thicker o–ring (122).
3. For model 236417 only, apply thread lubricant to
the threads of the extension rod (110) and screw it
into the reciprocator displacement rod (9) until the
pin holes align. Install the cotter pin (111).
4. Grease the large o-ring (108) and install it on the
top of the motor base (103). Set the reciprocator
(101) and motor cap (102) on the motor base.
Orient the reciprocator fluid inlet (34) to the
grounding lug (120) as shown in Fig. 3.
5. Secure the motor cap (102) to the base (103) with
four washers (105) and screws (104). Torque the
screws to 29–31 ft-lb (39–42 NSm).
Fig. 4
03057
1
3
4
2
101
102
105
111
110
109
117 106
107
Grease.
Apply thread lubricant.
Torque to 29–31 ft–lb
(39–42 NSm).
Beveled side faces up.
1
1
2
3
4
37
ti9005a
9
37
9
101
107
1
102
109
4
105
106 3
121
1
122
1
Model 236417
Model 261466

11308330
Service
03058
Fig. 5
1
4
2
9111
110
107
Grease.
Apply thread lubricant.
Beveled side faces up.
1
2
4
117
1
103
104
105
102
101
109
108
1
5
5 Torque to 29–31 ft-lb (39–42 NSm)
Model 236417

12 308330
Service
Fig. 6
1
4
9
Grease.
Beveled side faces up.
1
103
104
105
102
101
108
5
5Torque to 29–31 ft-lb (39–42 NSm)
ti9006a
107 1
4
109
122
1
121
1
Model 261466

13308330
Service
Reciprocator Service
Disassembly
NOTE: Repair Kit 236698 is available. For the best
results, use all the parts in the kit. Kit parts are marked
with an asterisk, for example (2*).
NOTE: When disassembling, lay out all parts in se-
quence, to make reassembly easier. Clean and inspect
all parts for wear or damage before reassembling.
Replace as necessary.
1. Remove the reciprocator from the motor base as
explained on page 9. Lay it on its side in a pan.
2. Unthread the tie rods (37) from the retainer (36)
and pull them out through the top of the reciproca-
tor. It should not be necessary to remove the four
nuts (27) and lockwashers (28).
3. Unscrew the four fluid tube nuts (N) and remove
the tubes (32, 39). See Fig. 7. Allow excess oil to
drain from the reciprocator, then plug the fluid
fittings.
CAUTION
Keep the hydraulic system clean
Always plug the hydraulic inlets, outlets, and lines
when disconnecting them for any reason to avoid
introducing dirt and other contaminants into the
system.
4. Pull the top cylinder cap (1), cylinder (33), and
displacement rod (9) together off the bottom
cylinder cap (35). Remove the o-ring (2) from the
bottom cap.
5. Grasp the top cap (1) and pull the cylinder (33) off.
Slide the cylinder off the displacement rod (9). Be
careful not to damage the rod. Remove the o-ring
(2) from the top cap.
6. Lay the top cap (1) and displacement rod (9) on a
table. Place a clean rag around the yoke (4) to
prevent the detent balls (3) from popping out. Push
the yoke (4) sideways off the valve sleeve (19)
while holding the balls (3) and spring (18) with the
rag, then carefully remove the balls and spring.
7. Inspect the valve sleeve (19), valve stop (25), and
spool (S) for damage. If any of these parts re-
quires replacement, unscrew the two screws (26)
holding the stop (25) to the spool (S). Remove the
stop and slide the sleeve (19) off the spool. If the
spool is damaged, replace the top cap (1).
NOTE: If any of these parts are being reused, thor-
oughly clean any adhesive residue from the screws
and female threads of the spool. Use a surface cleaner
such as chlorinated solvent on the threads and blow
dry with compressed air. If necessary, use a 10–24
unc–2b tap to remove adhesive from the female
threads.
8. Remove the capscrew (23), sealing washer (22)
and o-ring (24) from the cap plate (29). Lift off the
cap plate and remove the o-ring (20).
9. Hold the flats of the displacement rod (9) in a vise
and use a spanner wrench in the pin holes of the
piston (16) to screw it off the rod. Remove the trip
rod (17) from the displacement rod.
CAUTION
Be careful not to scratch the outside of the displace-
ment rod.
10. Unscrew the nut (48) and remove the retainers
(11) and spring (12) from the trip rod (17).
11. Slide the piston (16) off the trip rod (17). Remove
the bearing (5), seal (6), and o-rings (7 and 8) from
the piston.
12. Inspect the yoke (4) and trip rod (17) for damage.
If either part requires replacement, slide the yoke
into Repair Tool 189305 and set the tool in a vise.
See Fig. 8. Use a wrench on the flats of the trip
rod and unscrew the rod from the yoke.
13. Pull the housing retainer (36) away from the bot-
tom cylinder cap (35).
14. Remove the block packings (14 and 49), wiper
(15), bearing (13), and o-ring (2) from the housing
retainer and bottom cylinder cap.

14 308330
Service
03063A
23
*24
22
29
31
32
1
4
19
*3
25
26 *18
*3
17
*2
33
*2
37
39
38
28
27
34
9
48*
11
12*
11
8*
16
7*
6*
5*
38
35
49*
13*
14*
15*
2*
36
Fig. 7
N
S
N
32 (Ref)
N
39(Ref)
N
20*
50

15308330
Service
Reassembly
1. Install the block packing (14*) and wiper (15*) in
the housing retainer (36). The spring of the block
packing and the lips of the wiper must face up.
Install the o-ring (2*) on the top surface of the
retainer. See Fig. 8.
2. Install the bearing (13*) and block packing (49*) in
the bottom cylinder cap (35). The lips of the block
packing must face up.
3. Reassemble the housing retainer (36) and the
bottom cylinder cap (35).
NOTE: Thread sealant and primer are required. See
Tools Required on page 8 for specifications. Loctiter
609 is used only in step 4 below. Use Loctiter242
thread sealant and LoctiterPrimer T or Perma-Locr
115 in all other steps as required.
4. To reassemble the yoke (4) and trip rod (17), clean
the threads with primer or chlorinated solvent and
let dry for 3 to 4 minutes. Apply Loctiter609
thread sealant to the female threads of the yoke.
Slide the yoke into Repair Tool 189305 and place
the tool in a vise. Using a wrench on the flats of
the trip rod, screw the rod into the yoke. Torque to
54–56 in–lb (6.1–6.3 NSm).
5. Install the bearing (5*), o-ring (7*), and seal (6*) on
the piston (16). Install the second o-ring (8*) on the
underside of the piston. Slide the piston onto the
trip rod (17) so the wide end of the piston faces the
yoke (4).
6. Install the retainers (11) and spring (12*) on the trip
rod (17). Screw the nut (48*) onto the rod until it
runs out of thread, so that it bottoms out on the
shoulder of the rod. See the Detail in Fig. 8.
7. Hold the flats of the displacement rod (9) in a vise.
Slide the trip rod (17) into the displacement rod.
Use a spanner wrench in the pin holes of the
piston (16) to screw it into the displacement rod.
Torque to 30–40 ft–lb (41–54 NSm).
8. Install the o-ring (20*) in the top cylinder cap (1),
then install the cap plate (29), o-ring (24*), sealing
washer (22), and capscrew (23).
9. To reassemble the valve sleeve (19) and valve
stop (25), slide the sleeve (19) onto the valve
spool (S). (Either side of the sleeve can face up.)
Apply primer to the threads of the screws (26) and
let dry for 3 to 4 minutes. Apply 1 or 2 drops of
thread sealant to the female threads of the spool
(S). Install the stop (25) and torque the screws
(26) to 42–45 in–lb (4.7–5.1 NSm).
10. To assemble the valve mechanism, use Repair
Tool 189305 as follows:
a. Slide the yoke (4) into the repair tool, as
shown in the Detail in Fig. 8. Align the upper
detent holes (H) of the yoke with the center
line of the tool.
b. Insert the spring (18*) and one ball (3*) into the
valve stop (25). Tilt the valve stop and start
guiding it into the tool, making sure the ball is
sliding into the rounded slot in the tool.
c. Place the second ball (3*) at the other end of
the spring (18*) and push it in with your thumb
while rotating the valve stop (25) until the
spring is horizontal and the balls are in place.
Continue holding this assembly together.
d. Align the curved ends of the yoke with the
valve sleeve groove, then press the assem-
blies firmly together. Make sure the balls snap
into the upper detent holes (H) of the yoke (4),
and the curved ends of the yoke engage the
valve sleeve (19) groove. To remove the tool,
slide it over the trip rod (17).
11. Place the bottom cylinder cap (35) in a vise. Install
the o-ring (2*) in the cap. Set the cylinder (33) on
the bottom cap.
12. Install the o-ring (2*) in the top cylinder cap (1).
Make sure the hydraulic fittings (31, 34, and 38)
are oriented as shown in Fig. 7, then slide the
displacement rod (9) and piston (16) into the
cylinder (33) until it seats in the top cap.
CAUTION
When inserting the piston into the cylinder, carefully
guide the piston seal (6*) and bearing (5*) to prevent
damage to these parts.
13. Install the tie rods (37). If the nuts and washers
were removed, screw them onto the ends with
short threads. Torque the nuts (27) to 28–30 ft-lb
(38–41 NSm).
14. Remove the plugs from the fluid fittings (31, 34
and 38). Install the tubes (32, 39) and tighten the
four fluid tube nuts (N).
15. Reinstall the reciprocator on the motor base as
explained on page 9.

16 308330
Service
03059A
Fig. 8
1
3
4
2
03061
03060
29 38
22
20*
1
2*
37
4
39
5*
6*
17
33
35
2*
49*
36
14*
*15
*2
*13
34
9
32
*8
16
26
25
S
19
31 *24 23
*7
19 S
25
18* 3*
17
4
H
189305
Tool
17
11
*12
11
*48
Spring faces up.
Lips face up.
Apply thread sealant to female threads.
Torque to 54–56 in–lb (6.1–6.3 N.m).
Wide end faces yoke (4).
Apply primer to threads and let dry 3 to 4 minutes.
Apply 1–2 drops of thread sealant to female threads.
Torque to 42–45 in–lb (4.7–5.1 N.m).
5
6
7
8
7
6 8
5
21
2
4
3
7
Torque to 30–40 ft–lb (41–54 N.m).
9
9
6
6
4
3 6
6
Torque to 28–30 ft–lb (38–41 N.m).
10
10
27

17308330
Notes

18 308330
Parts
236418 ViscountrI Reciprocator, Series C
253608 ViscountrI Reciprocator, Series A
23
*24
22
29
*20
31
32
1
4
19
*3
25
26 *18
*3
17
*2
33
*2
37
39
38
28
27
34
32 (Ref)
39(Ref)
9
48*
11
12*
11
8*
16
7*
6*
5*
38
35
49*
13*
14*
15*
2*
36
Y10
50
03063A

19308330
Parts
236418, Series C and 253608, Series A, ViscountrI Hydraulic Reciprocator
Ref
No. Part No. Description Qty
Ref
No. Part No. Description Qty
1 236594 TOP CAP ASSEMBLY 1
2* 106274 O-RING; buna-N 3
3* 100069 BALL; carbon steel 2
4 189077 YOKE, valve 1
5* 178207 BEARING, piston; bronze-filled PTFE 1
6* 178226 SEAL, piston; glass-filled PTFE 1
7* 108014 O-RING; buna-N 1
8* 105765 O-RING; buna-N 1
9 189070 ROD, displacement, 236418 only 1
15H840 ROD, displacement, 253608 only 1
10Y179885 LABEL, warning 1
11 189069 RETAINER, spring 2
12* 178189 SPRING, compression 1
13* 112342 BEARING, rod; bronze-filled PTFE 1
14* 112340 PACKING, block; nitrile rubber 1
15* 112341 WIPER, rod; nitrile rubber 1
16 192656 PISTON 1
17 192657 ROD, trip 1
18* 108437 SPRING, compression 1
19 189072 SLEEVE, valve 1
20* 104093 O-RING; buna-N 1
22 178179 WASHER, sealing 1
23 106276 SCREW, cap, hex hd; 3/8–24 unf–2a;
0.625 (16 mm) long 1
24* 155685 O-RING; buna-N 1
25 192654 STOP, valve 1
26 104092 SCREW, cap, socket hd;
10–24 unrc–3a; 0.625 (16 mm) long 2
27 106292 NUT, hex; 3/8–24 unf–2b 4
28 100133 WASHER, lock; 3/8 in. size 4
29 178181 PLATE, cap 1
31 106470 ELBOW, 90_; 3/4–16 unf–2a;
fits 1/2 in. (13 mm) diameter tube 1
32 236419 TUBE, inlet; w/3/4–16 unf–2b fittings 1
33 178229 CYLINDER 1
34 107197 TEE; 3/4–16 unf–2a 1
35 189073 CAP, cylinder, bottom 1
36 189074 RETAINER, housing 1
37 189075 ROD, tie 4
38 110792 ELBOW, 90_; 7/16–20 unf–2a x
9/16–18 unf–2a;
fits 3/8 in. (10 mm) diameter tube 2
39 236420 TUBE, drain;
w/9/16–18 unf–2b fittings 1
48* 114231 NUT, hex, locking; w/nylon insert;
10–32 unf–3b 1
49* 112561 PACKING, block; urethane 1
50 107195 ADAPTER, straight thread, 37_flare;
3/4–16 unf–2a x 7/8–14 unf–2a 1
* These parts are included in Repair Kit 236698, which may
be purchased separately.
YReplacement Danger and Warning labels, tags and cards
are available at no cost.
Mounting Hole Layout
1
2
2.62” (67 mm) Dia. Cutout
Three 1/2–13 unc (2b) holes on a
3.5” (89 mm) dia bolt circle.
Three 0.45” (11.5 mm) countersunk
holes with M10 x 1.5 threaded
holes on a 4.92” (125 mm) bolt
circle.
Four 5/16–18 unc (2b) threaded
holes on a 6.4” (163 mm) dia bolt
circle for adapter plate mounting
holes.
3 Tie Rod
Mounting
1
2
3
4
3
4

20 308330
Parts
236417 ViscountrI Hydraulic Motor, Series A
101
102
103
104
105
105
106
107
108
109
110
111
112
113
114
115
116
117
119 120
Y124
03062
Ref
No. Part No. Description Qty
101 236418 RECIPROCATOR, hydraulic,
See pages 18 and 19 for parts 1
102 189079 CAP, motor 1
103 189068 BASE, motor 1
104 112339 SCREW, cap, socket hd;
3/8–24 unf–3a; 2.25 in. (57.2 mm) 4
105 100133 WASHER, lock; 3/8 in. size 8
106 106292 NUT, hex; 3/8–24 unf–2b 4
107 106274 O-RING; buna-N 1
108 112343 O-RING; buna-N 1
109 189080 DEFLECTOR, oil 1
110 189081 ROD, extension 1
111 100103 PIN, cotter 1
112 103875 ADAPTER, barbed; 1/8 npt(m);
fits 0.25 in. (6.3 mm) ID hose 1
113 HOSE, drain; PVC;
0.25 in. (6.3 mm) ID; purchase locally 6 ft
114 112279 BOTTLE, drain 1
115 236272 HOLDER, drain bottle 1
116 103927 CLAMP, hose 1
117 112030 O-RING 2
119 104582 WASHER, tab 1
120 104029 LUG, grounding 1
124Y187959 LABEL, warning 1
YReplacement Danger and Warning labels, tags and cards
are available at no cost.