
ELECTROHYDRAULIC STROKER CONTROL
DISASSEMBLY
1.
See Figure 18.
Remove 3 screws (37) holding block (36) to body (16).
2. Remove 2 screws holding body (16) to cap assembly (1).
3. Remove all parts from body (16) except pin (30) and arm assembly (28). It is not necessary to remove these parts
unless broken or worn. Examine parts for wear or damage.
4. Remove screw (3). Examine head for excessive wear, and body for smooth sealing surface with O-ring.
5.
See Figure 16.
Remove tube lines to cap assembly.
6. Remove screws holding cap assembly to pump body.
7. Remove cap assembly (1). Remove plug (4) with attached parts. Remove spring (11) and spool (6).
8. Do not remove sleeve in body (1). Sleeve is pressed into cap and finished to size. If sleeve or cap is worn,
replace the cap-sleeve assembly (1).
9. Remove screw (13) and nut (14). Push a rod through the cap to remove the retainer (7).
ASSEMBLY
See page 26 for tightening torque on plugs
1.
See Figure 16.
Install Avseal plug (9) in cap.
2. Install spool (6) into bore as shown. Install spring (11) over end of spool.
3. Install O-ring (8) on spring retainer (7). Install retainer (7), screw (13), and nut (14) in plug (4).
4. Install O-rings (10) and (15) on plug (4). Install plugs (4) and (12) in body (1). Install .047”, 1,19 mm orifice (19),
and .071”, 1,98 mm orifice, (20) and plugs (2) and (17). Torque plugs. Install O-ring (21) in cap.
5. Turn screw (13) in until spring retainer (7) contacts spring (11). Turn an additional 1-1/2 turns and lock in position.
6. Note proper location for control on pump (pg 24). Install O-rings on interface between cap and pump control pad.
Install cap on pump control pad, guiding the control piston into the bore.
7. Torque two assembly bolts to 75 lb.• ft., 102 N m.
8.
See Figure 18.
Apply thread locking compound on threads of screw (3), lubricate the shank, thread through the
cap into the control piston, and torque to 5 lb.• ft., 6.78 N • m.
9. Install minimum stop screw (24) and turn clockwise to stroke pump to full volume. Measure height from control cap
to top of screw (3). With control piston at full displacement, dimension must be .74 +/- .03 in., 18,8 +/- 0,76 mm.
Back out minimum stop screw (24) till there is no contact with control piston.
10. Press dowel (30) into body (16), through the link (28), to 1/4, 6,35 mm below surface, apply hydraulic sealant to
threads of screws (46) and install over dowel (30).
11. Press spool (21) into retainer (19). Caution: do not use excessive force. Place spool / retainer assembly into spool
(17) with spring (18) and washer (34). Secure with retaining ring (33).
12. While sleeve (27) is engaged into dowel on link (28), slide above spool assembly into bore of body (16), and
through sleeve (27). Spool (21) must move freely and easily at all positions of the link (28).
13. Install proportional valve (41) in block. Torque to 20 ft.• lbs., 27 N m.
14. Install coil on proportional valve. Torque to 20-25 in.• lbs., 2,2-2,8 N m maximum
15. Assemble all other components into body (16) per above drawing. Torque the plug (12).
16. While spring retainer is engaging clevis pin (5) under dowel of link (28), slide the other opening of spring retainer
over the top of the screw (3). Attach body assembly (16) to cap (1) with two screws and torque to 75 lb.• ft., 102
N m.
17 Install tubing assembly (Figure 24, 25).
52
Figure 16
Servo cap
PORT
“C2”
DIFFERENTIAL
ADJUSTMENT
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Summary of Contents for P07 C-mod
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