Manitowoc 777 Service And Maintenance Manual

Reference Only
Manitowoc Published 10-01-2012, Control # 045-08 10-7
777 SERVICE MANUAL TROUBLESHOOTING
10
Problem 5
Engine fault alerts enable during engine operation.
POSSIBLE CAUSES
High engine coolant temperature or low engine oil pressure.
High Engine Temperature Low Oil Pressure
Check coolant level and quality.
Ok Not Ok
Check engine oil level at dipstick.
Ok
Not Ok
Check fan belt for excessive wear.
Check pressure sender.
(See Test 4.)
Ok
Not Ok
Add or replace
coolant.
Check for leaks
before adding oil.
Ok
See engine manual.
Check if radiator is plugged.
Check temperature sender.
(See Test 3.)
Ok
See engine manual.
Adjust or replace fan belt.
Ok
Not Ok
Clean or repair radiator.
Does Engine Oil Temperature gauge in
overhead panel indicate a high temperature?
Yes No
See engine manual.
Does Engine Water Temperature gauge in
overhead panel indicate a high temperature?
Yes No
See engine manual.

Manitowoc 777 Specifications

General

Brand	Manitowoc
Model	777
Category	Construction Equipment
Language	English