Bobcat 331 - Belt Adjustment; Fuel System

A
B–16089
3
4
Rear of
Machine
Without
Air
Conditioning
1
2
5
B
2
1
Rear of
Machine
With Air
Conditioning
B–16088
3
1
P–21151
C
Always clean up spilled fuel or oil. Keep heat,
flames, sparks or lighted tobacco away from
fuel and oil. Failure to use care around
combustibles can cause explosion or fire
which can result in injury or death.
W–2103–1285
Stop and cool the engine before adding fuel.
NO SMOKING! Failure to obey warnings can
cause an explosion or fire.
W–2063–0887
Operation & Maintenance Manual–40–
331/331E/334 Excavator
BELT ADJUSTMENT
Water Pump Belt
Loosen the idler bolt (Item 1) [A] and move the idler to the
rear of the machine until there is 0.15 inch (3.8 mm) belt
deflection (Item 2) [A] with 5 lbs (2 kg) force.
Tighten the idler bolt (Item 1) [A].
Alternator Belt (Without Air Conditioning)
Loosen the alternator adjustment and mounting bolts
(Items 3 & 4) [A].
Move the alternator toward the front of the machine until
there is 0.22 inch (6 mm) belt deflection (Item 5) [A] with
2.5 lbs. (1kg) force.
Tighten the adjustment bolt (Item 3) [A] and the mounting
bolt (Item 4) [A].
Alternator and Air Conditioning Belt
NOTE: The alternator and air conditioner compressor
are driven by the same belt.
Loosen the air conditioner compressor adjustment and
mounting bolts (Items 1 & 2) [B].
Move the air conditioner compressor toward the rear of the
machine until there is 0.20 inch (5 mm) belt deflection (Item
3) [B] with 5 lbs. (2 kg) force.
Tighten the adjustment bolt (Item 1) [B] and the mounting
bolt (Item 2) [B].
FUEL SYSTEM
Fuel Specifications
Use only clean, high quality diesel fuel, Grade No. 2 or
Grade No. 1.
The following is a suggested blending guideline which
should prevent fuel gelling problems during freezing
temperatures:
Temp. F° (C°) No. 2 No.1
+15°(9°) 100% 0%
Down to –20° (–29°) 50% 50%
Below –20° (–29°) 0% 100%
See your fuel supplier for local recommendations.
Filling The Fuel Tank
Open the side cover and remove the fuel fill cap (Item 1) [C].
Use a clean, approved safety container to add fuel. Add fuel
only in an area that has a free movement of air and no
flames or sparks. NO SMOKING!
Install and tighten the fuel fill cap. Close the side door.
See the SERVICE SCHEDULE, Page 35 for the service
interval when to remove water from or replace the fuel filter.