Manitowoc Grove 5540F Service Manual page 215

5540F/YB5515 SERVICE MANUAL
1. Is there noise when selecting direction?
2. Is there noise when running with direction selector in neutral
and ratio selector is in first?
3. Is there air in the hydraulic system?
4. Is the fluid level correct?
5. Are the oil passages restricted?
6. Is the suction strainer restricted?
7. Is pump pressure as specified?
8. When flow testing pump, is output low?
9. Does the noise continue when direction selector is in
forward or reverse?
10. Is transmission misaligned?
11. Are the pump bushings worn?
12. Is the transmission not pulling in one direction?
13. Is transmission not pulling in both Forward and Reverse?
14. Is "Converter In" pressure as specified?
15. Is pump being driven by converter?
GROVE
CHECK
Published 10-21-2010, Control# 198-04
TRANSMISSION AND TORQUE CONVERTER
YES Check 3.
NO Check 2.
YES Check 9.
NO Check 19.
YES Continue running to expel air.
NO Check 4.
YES Check 5.
Check level only when machine is cold
NO
and top off as required.
YES Clear the restriction.
NO Check 6.
YES Remove and clean strainer.
NO Check 7.
YES Check 9.
Check clutch pressure maintenance
NO
valve is free to operate.
YES Replace pump.
Check converter sprag clutch for wear
NO
and slip.
YES Check 10.
NO Check 11.
Replace mountings and check
YES
position.
Check "Converter Out" pressure and
NO
flow.
YES Replace pump.
Check converter for wear or cooler for
NO
restriction to flow.
YES Check 16.
NO Check 13.
YES Stall test machine, Check 14.
NO Check 16.
YES Check 15.
Inspect converter relief valve for
NO damage. Check cooler bypass valve
pressure setting.
YES Check pump pressure.
NO Replace damaged parts.
ACTION
7-15
7