Piston Pump Control Assembly
44
(60
to 52 ft--lb
to 70 N--m)
15
10
1
14
2
3
4
9
13
12
7
5
4
8
6
16
24
17
to 26 in--lb
17
Loctite #222
(
2 to 3 N--m)
23
11
22
28
to 34 in--lb
21
(3.2 to 3.8 N--m)
Loctite #242
18
20
19
Figure 51
1.
2.
3.
4.
5.
6.
7.
8.
Plug
9.
O--ring
17. Set screw
18. Set screw
19. Pin
20. Retaining ring
21. Feedback link
22. Dowel pin
23. Bell crank
24. Set screw
O--ring
10. Wiper seal
11. O--ring
12. Adaptor
13. Ball
Retaining ring
Spring retainer
Spring
Spool valve
Control housing
Input shaft
14. Pin
15. Neutral switch
16. O--ring
Disassembly -- Manual Servo Control Assembly
Remove wiper seal with screw driver. Remove set
screw (18) that retains input shaft and remove input
shaft from control housing. Remove o--ring from shaft.
Reassembly -- Manual Servo Control Assembly
1.
1. Install spring retainer, spring, and second spring re-
tainerontospoolvalve.Compressspringtoallowretain-
ing ring (3) to be installed onto spool valve.
2.
spool. Remove plug from control housing and o--ring
from plug.
Remove set screw (24) from plug that retains valve
2. Install spool valve into control housing making sure
that metering notches on spool valve can be seen in the
metering ports.
3.
back link and spool valve. Remove pin, feedback link,
spool valve, and bell crank from control housing.
Removeretainingring(20)frompinthatretainsfeed-
3. Position bell crank in housing. Slide feedback link
into position between clevis on valve spool, aligning
holes, and install dowel pin and retaining ring (20).
4.
movespringretainer,spring,andsecondspringretainer
from spool valve.
Compress spring and remove retaining ring (3). Re-
4. Installnewo--ring(9)ontoinputshaft.Holdbellcrank
in position with feedback link slot and align splined hole
ofbellcrank withinputshaftcavity.Installinputshaftinto
control housing and bell crank.
5.
Clean all parts and lubricate in clean hydraulic oil for
reassembly.
5. Apply Loctite #242 or equivalent to set screw (18)
and install into control housing. Adjust set screw until it
bottoms out on input shaft and back out one--quarter
turn.
Hydraulic System
Page 4 -- 64
Groundsmaster 4100--D
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|---|---|
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| Language | English |
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