Textron JACOBSEN R-311 69166, Technical/Repair Manual

Page: 215 / 402

5-52 4203781 First Edition
HYDROSTATIC POWER TRAIN
5
Installation Notes
• Install the 4WD valve by reversing the order of
removal.
• Lubricate all O-rings prior to assembly.
• Make sure new O-rings are in place before installing
hoses on fittings.
• Replace hydraulic oil filter and charge pressure filter.
• Refill hydraulic oil tank. (Refer to “Safety, Operation,
and Maintenance Manual” for oil specifications.)
• Start engine. Check hydraulic system for leaks.
Repair as necessary.
• Check hydraulic oil level and add if necessary.
Disassembly, Inspection, and Assembly
See Figures 5-48 and 5-49.
NOTE
Repair of the control valve is limited to replacing valves
and cartridges or replacing O-rings.
Figure 5-48
NOTE
Record the location and orientation of the all fittings
before removing to ensure correct installation.
1. Remove straight adapter (1) from port “B.”
2. Remove 90° adapter (2) from port “R1.”
3. Remove straight adapter (3) from port “R2.”
4. Remove 90° adapter (4) from port “4WD.”
5. Remove dust cover (7), diagnostic port adapter (6),
and 90° adapter (5) from port “AD.”
6. Remove straight adapter (8) from port “L2.”
7. Remove straight adapter (9) from port “L1.”
8. Remove 90° adapter (10) from port “C.”
9. Remove 45° adapter (11) from port “A.”
Figure 5-49
NOTE
Record the location of the all cartridges before removing
to ensure correct installation.
10. Remove nut (12) and solenoid coil (13) from 4WD
reverse valve (14).
11. Remove 4WD reverse valve (14) from valve block
(26).
12. Remove O-rings (15 and 17) and backup rings (16)
from valve (14).
13. Remove check valve (21) from valve block (26).
TN1974
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PT1978
TN1978
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