
11
INTRODUCTION
The instructions contained in this section cover a complete teardown of the subject
pump. Disassemble only as far as necessary to replace or repair any worn parts.
DISASSEMBLY
Position pump unit so that valve block assembly is on top. A bench or similar suitable sur-
face capable of supporting unit should be used. Disassembly area should be clean.
VALVE BLOCK
See figure 14. Remove the eight hex. head cap screws (17) and lift the entire block
assembly from the port block.
See figure 12/13. Remove the four hex. head cap screws (58) and four soc. hd. screws
(53) and lift the entire block assembly from the port block.
See figure 10. Remove the four screws (39) to separate the cover (21) from the block
(11). Do not remove the check valves (19).
Remove plugs (43), (36) and pin (40). Remove the 8-32 nut from the bottom of cover (21)
to remove filter assembly (34).
Remove housing (29) and O-ring (28). Remove items (30), (31), (32) and (33) as a unit.
Insert a small brass rod thru the hole in the housing and tap out piston (27) and O-ring
(26).
Remove spring (25) and cone (24). Remove seat (23) and O-ring (22).
Note: Seat is made for hex. wrenching. Use 1/2" six point socket with 1/4" drive.
Remove O-ring (37) and replenishing relief valve (41). Inspect orifices (12) visually to
insure they are open. Do not remove unless damage or clogging is apparent.
Remove springs (16), (17) and (18). Remove retainer (15) and poppets (13) and (14).
Remove the four screws (4) from the plate (6) and (11). Remove gasket (7).
Remove seats (8) and (9). Do not remove roll pins (5) and (10) unless replacements are
needed.
See figure 11. Remove plugs (20), (23) and pin (21). Remove the 8-32 nut from the bot-
tom of block (1) to remove filter assembly (14). Do not remove the check valves (2).
Remove housing (8), O-ring (9), piston seal (10), O-ring (11), screw (6), nut (7), and
acorn nut (45) as a unit.
Remove spring (12) and cone (13). Remove seat (5) and O-ring (4).
Note: Seat is made for hex. wrenching. Use 1/2" six point socket with 1/4" drive.
Remove plug (25) and replenishing relief valve (36).
Remove O-rings (37), (48) and (47). Remove four screws (43) and remove the retainer
plate (42). Do not remove roll pins (46) unless replacements are needed.
Remove gasket (29) and seats (27) and (28). Remove poppets (30), (31) and springs
(32), (33), (35) and retainer (34).
Inspect orifices (3) visually to insure they are open. Do not remove unless damage or
clogging is apparent.
CONTROLS
See figure 14. Remove the four screws (14) from the side cover (16) and remove the
input shear seal valve assembly
Note: The myltite washers (13) should be replaced at assembly.
Remove the four screws (14) from the side cover (15) and remove the counter balance
shear seal assembly.
Remove the two screws (12) and remove the balance stem (9) and balance plate (10)
See figure 14. Remove two screws (20) and remove external pump (21).
Remove four screws (23) and remove shuttle valve (24).
Remove four screws (9) fig. 15 and remove adapter (22).
See figure 9. Remove retainer ring (16), pin (14), holddown nut (13), insert (15), thrust
washers (10), bearing (11) and seal ring (12).
Remove pressure plate (9), Gerotor side plate (5) “O” rings (7) and (8).
Remove Gerotor assembly (3), dowel pin (4), key (2), and side plate (1).
BARREL HOLDDOWN AND
GEROTOR ASSEMBLY
EXTERNAL PUMP, SHUTTLE
VALVE AND REAR ADAPTER
(after 7-93)
(before 7-93)
UNIT DISASSEMBLY
Содержание Goldcup Series
Страница 9: ...9 ASSEMBLY TOOL DRAWINGS Note Dimensions in are mm T 1 T 2 MATERIAL CRS 1 DIA X 2 5 8 25 4mm 66 68 mm...
Страница 25: ...25 ASSEMBLY PROCEDURES Figure 11 Seal Kit S23 00135 Valve Block After 7 93 S23 12770...
Страница 40: ...40 HYDRAULIC CIRCUIT Revised...
Страница 41: ...41 HYDRAULIC CIRCUIT Revised...
Страница 47: ...47 NOTES...