TM 5-3805-262-20
3-18. SERVICE BRAKE SYSTEM TROUBLESHOOTING
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. UNEVEN OR ERRATIC SERVICE BRAKES.
Step 1.
Check if air pressure is same in each tire (should be
a . I f a i r p r e s s u r e i n e a c h t i r e i s n o t 4 0 p s i , a d j u s t
s u r e.
4 0 p s i ).
t i r e p r e s -
b. If air pressure is okay, go to step 2 below.
Step 2.
Place blocks at each wheel to prevent loader from moving.
Engage transport/service link (page 9-8) .
Ensure that parking brake is applied.
B e f o r e r a i s i n g v e h i c l e f r o m g r o u n d , b e s u r e t h a t t r a n s p o r t / s e r v i c e l i nk
is engaged. Failure to do so may cause loader to turn and slip off jacks
or jack stands causing serious injury or death.
Raise one axle and wheel off ground.
Remove tire and wheel from axle end (page 8-4).
Check brake calipers for brake fluid leakage or sticking piston.
Repeat for other wheel and axle.
a . I f b r a k e c a l i p e r i s l e a k i n g o r p i s t o n s t i c k i n g , r e p l a c e b r a ke
caliper (page 7-28).
b. If brake caliper is okay, go to step 3 below.
Step 3.
Check brake pads for wear (page 7-18), uneven glaze, and brake fluid
or lubricant contamination.
a. Replace brake pads if worn, glazed, or contaminated (page 7-19).
b. If brake pads are okay, check disk for scored or grooved condi-
tion (page 7-18). Notify next higher maintenance level to re-
place disk if these conditions are seen .
2. POOR BRAKE ACTION.
I f s e r v i ce
7 - 3 0 ) . I f
system, go
b r a k e a c t i o n is
b r a k e a c t i o n i s
to step 1 below.
NOTE
p o o r , b l e e d a i r f r o m b r a k e s y s t e m ( p a g e
s t i l l p o o r a f t e r b l e e d i n g a i r f r o m b r a k e
3-113
