Item
Lubricate in Accordance with Current Lubrication Order
Paragraph reference
48
Hoisting Cables. Inspect cables for general condition. Replace worn, frayed or
damaged cables.
49
Load Rollers. Inspect load rollers for wear and proper operation. Adjust if
necessary. Correct clearance between load roller and roller path in 0.047 inch.
50
Drive Chain. Inspect chain for wear. Replace a defective chain.
51
Boom Assembly. Inspect boom assembly and cable sheaves for cracks, breaks,
and general condition. Repair or replace defective parts.
52
Hoist Drum Shaft Brakes. Inspect for proper operation. Adjust, repair or replace
defective brakes.
Note 1. Operation. During operation observe for any unusual notes or vibration.
2. Adjustments. Make all necessary adjustments during operational test.
Section III. TROUBLESHOOTING
40. General
This section provides information useful in
trouble symptom stated is followed by a list of probable
diagnosing and correcting unsatisfactory operation or
causes of the trouble.
The possible remedy
failure of the crane-shovel and its components. Each
recommended is described opposite the probable cause.
41. Engine Lacks Power
Probable cause
Possible remedy
Air cleaner choked ................................ ............. Replace or repair air cleaner (paras. 84 and 91).
Fuel pump clogged................................ ............. Replace or repair fuel pump (paras. 88 and 95).
Air in fuel system ................................ ............... Tighten all fuel line connections. Replace defective
lines (paras. 85 and 92).
Faulty fuel ................................ .......................... Drain and replace fuel.
Defective carburetor................................ ........... Repair carburetor (paras. 86 and 93).
Burnt or faulty valves ................................ ........ Replace or repair valves (paras. 171 and 174).
Defective piston rings................................ ......... Replace piston rings (parts. 354 and 434).
Blown head gasket................................ ............. Replace head gasket (paras. 340 and 428).
42. Starters Fail to Operate
Probable cause
Possible remedy
Poor electrical connection ................................ . Clean and tighten battery cables and other electrical
connections. Replace if necessary (para. 9 ).
b
Starter button defective................................ ...... Replace button (paras. 107 and 135).
Faulty batteries ................................ .................. Replace batteries (para. 9b).
Faulty starter ................................ ..................... Replace starter (paras. 102 and 129).
Starter brushes worn ................................ ......... Replace brushes (paras. 102 and 129).
Defective starter ................................ ................ Repair starter (paras. 102 and 129).
Internal engine seizure-................................ ...... Replace the engine (paras. 297 and 298).
43. Engines Fail to Start or Are Hard to Start
Probable cause
Possible remedy
Lack of fuel ................................ ........................ Fill fuel tank
Clogged carburetor screen ................................ Service carburetor screen (paras. 86 and 95).
Air cleaner clogged ................................ ........... Service air cleaner (para. 36).
Improper valve learn ................................ ......... Adjust valves (paras. 171 and 174).
Batteries too low to turn over engine ................. Charge or replace batteries (para. 9 ).
Defective starter................................ ................. Replace starter (paras. 102 and 129).
Defective spark plugs ................................ ........ Replace spark plugs (paras. 100 and 127).
Carburetor out of adjustment.............................. Adjust carburetor (paras. 86 and 93).
Defective distributor points ................................ Replace distributor points (paras. 99 and 125).
Defective carburetor................................ ........... Repair carburetor (paras. 300 and 383).
AGO 6819A 67
