21
PARTS LIST FOR FIGURE 9
item
description
part no.
qty.
1
side plate
033-71492
1
2
square key 1/8 x 9/16
211-22034
1
3
gerotor and eccentric ring assy.
S13-43334
1
3a
eccentric ring
033-72256
1
3b
inner and outer gerotor
033-71500
1
4
dowel pin 3/16 x 1-9/16
324-21225
1
*5
gerotor sideplate and bearing assy
See below
1.
7
O-ring 70-914-44
671-00144
1
8
O-ring 70-914-29
671-00129
1
9
pressure plate
033-70531
1
10
thrust washer
350-10081
2
11
bearing
230-82164
1
12
seal ring
033-72101
1
13
holddown nut
033-91052
1
14
pin
033-53921
1
15
insert
033-91051
1
16
retaining ring
033-53923
1
* for RH pumps use S13-46762
* for LH pumps use S13-46763
See figure 10.
Note: Prior to assembly of reconditioned parts, check finish of gasket surface on
valve block and retainer. Must have 60 rms finish with no grinding marks which might
carry oil to outside surface. If lapping is necessary, check depth of pockets for valve
seats after lapping. Must be .085" (2.16 mm) minimum after lapping, to provide clear-
ance for valve seats.
Lubricate the four orifice plugs (12) and insert in the top of valve block (11).
Check the pilot valve assembly (41) to be certain that approximately 1-1/2 threads are
exposed from this small nut on the bottom of the valve assembly. This setting will allow
the valve to function at about 200 PSI (14 bar). Each complete right hand turn of this
screw will increase the pressure about 50 PSI (3.4 bar). Torque hex lock nut to 20-25 in.
lbs. (2.26 to 2.82 Nm). Thread the check valve (41) into the 3/8-24 tapped hole into the
valve block (11) as shown.
Press the two dowel pins (10) into the holes provided in the bottom of the valve block
(11). The pins (10) must be .12" (.3 mm) below the surface.
Place the two sequence seats (8) in the sequence ports (SB, SA). Place the four valve
seats (9) in the ports marked RB, RA, RV and servo. Position the gasket (7) and retain-
er plate (6) over the seats and insert the four screws (4) in the block (11). Torque to 10
in.-lbs. (1.1 Nm).
Position the valve block and the attached parts with four orifices (12) turned up. Insert the
two 1-7/16 long springs (17) in the two sequence poppets (13) and install (13) and(17)
in the block and over the sequence seats (18) in ports SB and SA. Install the four valve
poppets (14) in the ports marked RB, RA,RV and servo. Servo and RV seats to seated
with grooved side down. Insert spring retainer (15), large end first, in the servo poppet.
Insert the light weight spring (18) 1-9/16" (39.7 mm) long in the RV poppet. Insert the
three 1" (25.4 mm) long springs (16) in poppets RB, RA and servo.
Lubricate the two check valves (19) and install in sides of cover (21).
Lubricate O-ring (22) and place on seat (23) and install in valve cover (21). Use a 1/2" 6
point 1/4" drive socket and torque to 15 ft-lbs. ((20.4 Nm). Do not use impact wrench.
Lubricate O-rings (26) and (28) and place on parts (27) and (29). Assemble parts 30, and
33 on (31) and start (31) into housing (29). Push seal piston (27) and O-ring (26) into
housing (29) with the small end of the piston exposed. Place spring (25) on cone (24) and
insert all these parts in the valve cover (21). Be certain that cone (24) enters seat (23).
Disassemble the strainer assembly (34) and reassemble per the following steps:
a. Install the orifice screw of the strainer assembly into valve cover. Thread elastic stop
nut onto the orifice screw and torque to 23 lb-in. (2.6 Nm).
b. Install clean filter screen on strainer support and secure in place with socket head
cap screw, 6-32 x 1/4" long. Torque 6-32 screw to 13 lb-in. (1.47 Nm).
VALVE BLOCK
(before 7-93)
ASSEMBLY PROCEDURES
Revised