18
85399 Rev B
SERVICE
V-BELT ADJUSTMENT
(See Figure 7)
The hydraulic pumps are driven by a V-belt from the engine. Tension on the V-belt is
maintained by an idler pulley. The idler can be adjusted to set the V-belt tension.
Before adjusting, inspect the V-belt wear or damage and check the bearings in the idler
pulley. Check the hardware holding the engine and the pumps to the frame. Check for a
buildup of dirt and debris in the V-belt grooves pulleys, clean as needed.
Check for free movement of the idler mounting plate. The plate must be free to slide. Clean
and adjust as needed.
To adjust the idler pulley, turn the adjuster screw (accessible only from under the machine)
to compress the spring. Tighten the adjuster until the spring has been compressed to a
measure of 2-1/2” to 2-5/8” (63.5mm to 66.7mm).
Test and repeat adjustment if required. Replace V-belt if proper operation cannot be
reached with adjustment.
SV85399-01-1
V-BELT
LEFT
PUMP PULLEY
RIGHT
PUMP PULLEY
TENSION
ADJUSTER
2-1/2” TO 2-5/8”
SPRING LENGTH
MOUNTING PLATE MUST BE FREE TO SLIDE
TENSION
ADJUSTER
IDLER PULLEY
ENGINE
PULLEY
IDLER
PULLEY
FIGURE 7
