HYDROSTATIC POWER TRAIN
4181383 First Edition 5-17
5
Figure 5-13
7. Install flow lock tool (1) and secure to pump control
arm.
8. Close tow valve completely by turning clockwise.
Figure 5-14
9. Remove drive tube (4).
10. Disconnect hose (3).
Figure 5-15
11. Connect test hose (13) of flow meter inlet to fitting
(5).
12. Connect test hose (12) of flow meter inlet to fitting
(6).
13. Connect hose (10) of flow meter outlet to hose (3).
14. Connect test hose (11) of flow meter outlet to fitting
(2).
15. Open flow meter valve (8) completely before starting
engine.
NOTE
Verify engine rpm is within specification (2850 rpm ± 50)
to ensure accurate hydraulic test results.
16. Start engine, release brake, and run at full throttle
(2850 rpm ± 50).
17. Adjust flow lock tool (1) to allow pump to produce 15
gpm (57 lpm) in the forward direction.
18. Use the flow meter to warm the hydraulic oil. Turn the
flow meter valve (8) until a reading of 1800 psi (124
bar) or one half of the relief valve rating is reached.
Warm oil to 120—150°F (49—65°C); open valve fully
after operating temperature is reached.
19. After warming the hydraulic oil, verify flow lock tool is
adjusted to allow pump to produce 15 gpm (57 lpm)
in the forward direction.
20. Read and record no load flow.
21. Slowly close flow meter valve (8) until pressure
reaches 2700 psi (186 bar). Read and record loaded
flow.
22. Stop engine, apply brake, and return flow lock tool
back to neutral position.
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TN1705
TN1399
4
3
2
6
5
12
TN1357
11
8
13
10
7
9
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