John Deere 318 - Manual (Page 363)

D
MACHINE WILL NOT REACH FULL SPEED
• Inspect transmission control linkage for wear or damage. See Section 50.
• Inspect transmission and differential mounting cap screws for loose condition.
• Check engine fast idle speed: See Section 220.
• Inspect check valves for damaged seat, seals or stuck check ball. See Section 50.
• Inspect internal rotating group for scoring and wear (slippers, pistons and cylinder block, valve plate and
cylinder block). If internal damage is found check for missing welch plug: GO TO
Ò
E
TRANSMISSION OPERATES HOT
• Check transmission temperature. GO TO Õ
• Check all cooling components for plugged or restricted condition.
• 318 and 420; Test steering valve for neutral return: GO TO Ú
• Test charge pump pressure: GO TO Æ
• Inspect internal transmission components for wear or damage. See Section 50.
• Check for dirt accumulation on transmission causing transmission oil to overheat: GO TO Õ
• Check for high draft loads causing transmission oil to overheat: GO TO Õ
F
MACHINE FREEWHEELS
• Inspect transmission control linkage for loose connections allowing swashplate movement under load. See
Section 50.
• 316 and 318; Test for debris in check valves: GO TO ‘
• Inspect check valves for damaged valve seat, seals or stuck check ball. See Section 50.
• Test charge pump pressure: GO TO Æ
• Inspect internal rotating group for scoring and wear (slippers, pistons and cylinder block, valve plate and
cylinder block). If internal damage is found check for missing welch plug: GO TO
Ò
MX,159025015,6 -19-20APR95
MX,159025015,7 -19-20APR95
MX,159025015,8 -19-20APR95
Diagnosis, Tests and Adjustments/Troubleshooting Guide
TM1590 (17MAY95)
250-15-3
316, 318 & 420 Lawn and Garden Tractors
020895
250
15
3