Section 120-0010
Transmission - Transmission and Mounting
10
SM 1574 12-98
MECHANICAL TROUBLESHOOTING CHART
CONDITION REASON REMEDY
M - Vehicle operates in fifth Fifth and sixth gear clutch Overhaul transmission
and sixth gears and moves failed (won't release)
forward in neutral when engine
is accelerated, but stalls in all
other gears when engine is
accelerated - Electronic
Troubleshooting OK
N - No power is transmitted in Range clutch failed (won't Overhaul transmission. Check for worn piston
any one range - Electronic apply, slipping) seals, broken piston housing, or worn clutch
Troubleshooting OK plates in that range.
O - Vehicle will operate in Splitter-overdrive clutch won't Overhaul transmission. Check splitter clutches
second, fourth, sixth and release or splitter-direct clutch for worn components.
reverse gears but will not won't apply, slipping
operate in all other gears -
Electronic Troubleshooting OK
P - Vehicle will operate in first, Splitter-direct clutch won't Overhaul transmission. Check splitter clutches
third and fifth gears but will not release or splitter-overdrive for worn components.
operate in all other gears - clutch won't apply, slipping
Electronic Troubleshooting OK
Q - Slow clutch engagement Low oil level Add oil to proper level
Foaming oil Refer to condition 'B'
Worn piston seals Overhaul transmission
Low main pressure Refer to condition 'V'
R - Vehicle lacks power and Engine malfunction Check engine. Refer to engine service manual.
Aerated oil Refer to condition 'B'
Low engine speed at converter Refer to condition 'T'
stall
High engine speed at Refer to condition 'S'
converter stall
Hydraulic retarder partially Check retarder linkage
applied
Vehicle brakes dragging Check parking and service brakes
Stator freewheel clutch failed Overhaul transmission
S - High engine speed at Low oil level Add oil to proper level
Low converter-out pressure Refer to condition 'U'
High oil temperature (above Refer to condition 'A'
135° C; 275° F)
Clutch slipping, main pressure Overhaul transmission. Replace clutch piston
normal seal rings or clutch plates.
Foaming oil Refer to condition 'B'
acceleration
converter stall
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