Manitowoc Grove YB5515 Service Manual

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

Manitowoc Grove YB5515 Specifications

General

Brand	Manitowoc
Model	Grove YB5515
Category	Construction Equipment
Language	English