C8, TM 9-2350-230-12
CHECKING TRACK TENSION
SAG IN TRACK BETWEEN IDLER AND SPROCKET
MUST BE KEPT BETWEEN 3-1/2 AND 4 INCHES.
CHECK TRACK TENSION BEFORE AND AFTER
VEHICLE OPERATION AS FOLLOWS:
1. PLACE CANTEEN DRINKING CUP FLAT (3-1/2"
DIMENSION) ON TRACK DIRECTLY OVER NO. 3
ROADWHEEL.
2. LIFT FRONT MUD GUARD AND SIGHT FROM
POINT A (TOP OF TRACK ON IDLER) TO POINT B
(TOP OF TRACK ON SPROCKET).
a. IF TOP OF CANTEEN CUP COINCIDES WITH
LINE OF SIGHT, TRACK ADJUSTMENT IS
CORRECT.
b. IF TOP OF CANTEEN CUP OBSCURES LINE
OF SIGHT, TRACK IS TOO TIGHT.
DECREASE TRACK TENSION AS REQUIRED.
c. IF TOP OF CANTEEN CUP IS BELOW LINE OF
SIGHT, TRACK MAY BE TOO LOOSE. CHECK
BY FOLLOWING STEP 3.
3. PLACE CANTEEN CUP UPRIGHT (4" DIMENSION)
B. ADJUSTING TRACK TENSION
ON TRACK DIRECTLY OVER NO. 3 ROADWHEEL.
a. IF CANTEEN CUP OBSCURES LINE OF
NOTE: IF TRACK SAG CANNOT BE TAKEN UP,
SIGHT, TRACK TENSION IS WITHIN
DECREASE TRACK TENSION, REMOVE 1 TRACK
ACCEPTABLE LIMITS.
SHOE (FIG. 5-5) AND READJUST TRACK TENSION.
b. IF TOP OF CA NTEEN CUP IS ON OR BELOW
LINE OF SIGHT, TRACK IS TOO LOOSE.
DECREASING TRACK TENSION
INCREASE TRACK TENSION AS REQUIRED,
AND REPEAT STEP 2 TO MAKE SURE TRACK
OPEN PRESSURE BLEED PLUG ON TRACK
IS NOT TOO TIGHT.
HYDRAULIC ADJUSTER AND REDUCE PRESSURE
INCREASING TRACK TENSION
UNTIL TENSION IS ADJUSTED AS INDICATED IN
PUMP GREASE INTO PRESSURE INPUT FITTING
STEP 3. TIGHTEN PLUG AND GREASE FITTING TO
WITH GREASE GUN UNTIL TENSION IS ADJUSTED
12-16 POUND-FEET.
AS INDICATED IN STEPS 1 THROUGH 3.
Figure 5-4. Checking and adjusting tack tension
WE 12134
5-13
