Probable cause
Possible remedy
Probable cause
Possible remedy
Loose mounting bolts ---------------Tighten or replace bolts
Broken daft bushings --------------- Replace shaft bushing
(pars 147-149).
Defective collar or yoke ------------Replace collar or yoke
Broken shaft -------------------------- Replace shaft
36. Dipper Stick Does Not Operate Properly
29. Carrier Engine Clutch Slips
Probable cause
Possible remedy
Probable cause
Possible remedy
Defective shipper shaft ------------- Replace shipper shaft
Worn lining segment or
Replace lining segments or
plates.
37. Carrier Has No Brake Action, Insufficient Action,
30. Carrier Engine Clutch Drags
Probable cause
Possible remedy
or Brakes Apply Slowly
Defective, worn, or
Replace clutch disk
Probable cause
Possible remedy
glazed clutch facings
Worn brake linings ------------------ Replace linings
Worn pressure plate
Replace levers
release levers
No air pressure----------------------- Replace or repair air com-
Defective splines in hub
Replace parts
pressor (pars. 81-.
or shaft
38. Carrier Brakes Grab or Act Unevenly
31. Crane Hoist Gears Noisy
Probable cause
Possible remedy
Probable cause
Possible remedy
Worn or oil soaked
Replace linings
Worn gear teeth ----------------------Replace gear
linings
Worn or scored bushings ----------Replace bushings (pars.
39. Carrier Front Axle Noisy
147- -------------------------------------
Probable cause
Possible remedy
Bent hoist shaft-----------------------Replace hoist shaft (pars.
Broken axle --------------------------- Replace axle
147-149).
Worn or broken ---------------------- Replace gears
32.
Crane Swing Gear Noisy or Pulsations in
differential or pinion
Operations
gears.
Probable cause
Possible remedy
Worn or broken ---------------------- Replace bearings
Worn gear teeth ----------------------Replace gear
differential or pinion
bearings.
Worn or scored bearings-----------Replace bearings
Worn splines on axle --------------- Replace axle shaft
shaft
Bent swing shaft ---------------------Replace swing shaft
Worn splines on pinion------------- Replace pinion shaft
shaft.
40. Carrier Rear Axle and Tandem Unit Noisy
33. Crane Revolving Frame Rocks in Operation
Probable cause
Possible remedy
Probable cause
Possible remedy
Broken pinion or --------------------- Replace gears
Damaged rotating frame -----------Replace ring gear
differential gears
ring gear.
Worn or defective ------------------- Replace bearings
34. Crane Revolving Frame Will Not Rotate
differential or pinion
bearings.
Probable cause
Possible remedy
Worn splines on pinion------------- Replace shaft or yoke
Worn or loose shaft -----------------Replace bushing
shaft or propeller shaft
bushing
yoke
Worn or scored bushings ----------Replace bushings
Worn or defective ------------------- Replace equalizing blew
equalizing beam
Defective ring or pinion -------------Replace gears
Worn or defective ------------------- Replace torque rods.
gears.
torque rods
35. Crane Boom or Hoist Operation Rough
41. Carrier Transmission Noisy
Probable cause
Possible remedy
Probable cause
Possible remedy
Bent drive shaft ----------------------Replace drive shaft
Loom transmission------------------ Tighten or replace bolts
mounting bolts
(pars. 807-809).
Inner boom gear binding -----------Replace gear bushing
27
