Fuel/Vent Hoses; Oil Filter/Oil Pump; Testing Oil Pump Pressure; Liquid Cooling System - Arctic Cat 700 Diesel ATV 2007 Service Manual

Fuel/Vent Hoses

Replace the fuel hoses every two years. Damage from
aging may not always be visible. Do not bend or
obstruct the routing of the vent hose or fuel return
hose.

Oil Filter/Oil Pump

NOTE: Whenever internal engine components
wear excessively or break and whenever oil is con-
taminated, the oil pump should be replaced. The
oil pump is not a serviceable component.
Testing Oil Pump
Pressure
NOTE: The engine must be warmed up to the
specified temperature for this test.
1. Connect the Tachometer (p/n 0644-275) to the
engine.
2. Disconnect the oil pressure switch connector; then
connect the Oil Pressure Test Kit (p/n 0644-495)
to the oil pressure switch port.
F
NOTE: Some oil seepage may occur when
installing the oil pressure gauge. Wipe up oil resi-
due with a cloth.
3. Start the engine and run at the recommended
RPM. The oil pressure gauge must read as speci-
fied (see Section 3).
NOTE: If oil pressure is lower than specified,
check for an oil leak, damaged oil seal, defective
oil pump, or oil cooler.
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NOTE: If oil pressure is higher than specified,
check for too heavy engine oil weight (see Section
1), clogged oil passage, clogged oil filter, or
improper installation of the oil filter.

Liquid Cooling System

The cooling system should be inspected daily for leak-
age and damage. Also, the coolant level should be
checked periodically.
To check the cooling system, see Section 2.
DRAINING COOLANT
The cooling system does not have a drain; therefore,
coolant must be removed using the following proce-
dure.
1. Using suitable in-line clamps, close off the lower
radiator hose and the coolant bypass hose next to
the water pump.
2. Place a suitable drain pan with a capacity of at
least 4 l (4.2 U.S. qt) under the left front of the
engine; then loosen the hose clamp on the coolant
bypass hose.
3. Remove the hose and allow coolant to drain into
the drain pan. A funnel or short hose can be used
to direct coolant into the drain pan.
4. Install the coolant bypass hose and tighten the
clamp securely; then remove the in-line clamps.
FILLING COOLANT
1. Elevate the rear of the ATV approximately 30 cm
(12 in.) and secure in place using appropriate
blocks.
! CAUTION
Failure to elevate the rear of the ATV may result in air
being trapped in the cooling system causing severe
engine damage due to overheating.
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