8T6443 8C4947 8C4948 1257007 7U76471182717 1182727 9J7965 6J5733 8T8361 8T8362 8J2577 8J6371 8C4808 8C4809 8T6683 7J9885

ARTICULATED TRUCK 725 730 730C D250E II D300E II
BACKHOE 931
BACKHOE LOADER 416 416B 416C 416D 424D 426 426B 426C 428 428B 428C 428D 432D 436 436C 438C 438D 442D 444E
BULLDOZER 3P 3S
COMPACT WHEEL LOADER 902 908 910 910E 910G 914G
EJECTOR TRUCK 730 730C
EXCAVATOR 315C 315D L
FORWARDER 554 564 574 574B
INTEGRATED TOOLCARRIER IT12B IT14F IT14G IT14G2 IT62G IT62G II IT62H
MOTOR GRADER 120G 120H 120H ES 120H NA 120K 120K 2 120M 120M 2 12G 12H 12H ES 12H NA 12K 12M 12M 2 12M 3 12M 3 AWD 130G 135H 135H NA 140G 140H 140H ES 140H NA 140K 140K 2 140M 140M 2 140M 3 140M 3 AWD 143H 14G 14H 14H NA 14M 160G 160H 160H ES 160H NA 160K 160M 160M 2 160M 3 160M 3 AWD 163H 163H NA 24H
QUARRY TRUCK 775D
TELEHANDLER TH460B TH560B TH580B
TRACK LOADER 931B 933 933C 939
TRACK SKIDDER 517 D4HTSK II D4HTSK III
TRACK-TYPE TRACTOR 30/30 D3B D3C II D3C III D3G D3K XL D3K2 LGP D4C III D4G D4H D4H XL D4K XL D4K2 XL D5C III D5G D5K LGP D5K2 XL D5M D5N DEUCE
TRACTOR 776D
TRUCK 773D 773E 773F 773G 773G LRC 773G OEM 775E 775F 775G 775G LRC 775G OEM 777D 777F 777G
WAGON 613C II
WHEEL HARVESTER 550 550B 560B 570 570B 580 580B
WHEEL LOADER 924G 936 936F 950B 950F 950F II 950G 950G II 950H 950K 960F 962G 962G II 962H 962K 966G 966G II 966H 966K 972G 972G II 972H 972K G936
WHEEL SCRAPER 613C 613C II
WHEEL SKIDDER 508 525C 525D 535C 535D 545 545C 545D 555D
WHEEL TRACTOR 613C II 627B 637D 657B 657E
WHEEL TRACTOR-SCRAPER 613G

Use this procedure in order to troubleshoot a problem with the valve rotators or spring locks.Probable Cause
Valve ComponentsRecommended Actions
Table 1
Troubleshooting Test Steps Values Results
1. Valve Components
A. Inspect the following components for damage:
1. Valve rotators
2. Spring locks
3. Valve springs
4. Valves
B. Ensure that the valve has not contacted the piston. If the valve has contacted the piston, check the exhaust system for debris.
Damaged components
Result: The valve components are damaged.
Replace the damaged components.
A valve rotator that is cracked or a valve rotator that is broken is an indiion of an engine overspeed. Determine the cause of the engine overspeed. Repair the condition.
Complete the procedure in the order in which the steps are listed. If the procedure did not correct the issue, contact your dealer Technical Communior (TC). For further assistance, your TC can confer with the Dealer Solutions Network (DSN).