Cooling System Pressure Test; Cooling System Hoses / Radiator; Coolant Drain / Radiator Removal - Polaris 2011 RANGER RZR Service Manual

Cooling System Pressure Test

Refer to Chapter 3 for cooling system pressure test procedure.
Cooling System Hoses
1. Inspect all hoses for cracks, deterioration, abrasion or
leaks. Replace if necessary.
2. Check tightness of all hose clamps.
CAUTION
Do not over-tighten hose clamps at radiator,
or radiator fitting may distort, causing a
restriction to coolant flow.
Radiator hose clamp torque is 36 in. lbs. (4 Nm).
Radiator
1. Check radiator (A) air passages for restrictions or damage.
Flush radiator fins
in this direction
A
9923142 - 2011 RANGER RZR / RZR S / RZR 4 Service Manual
© Copyright 2010 Polaris Sales Inc.
2. Carefully straighten any bent radiator fins.
3. Remove any obstructions with compressed air or low
pressure water.
CAUTION
Washing the vehicle with a high-pressure
washer could damage the radiator fins and
impair the radiators effectiveness. Use of a high-
pressure washer is not recommended.

Coolant Drain / Radiator Removal

Coolant Drain
1. Remove the hood from the front cab.
WARNING
Never drain the coolant when the engine and
radiator are warm or hot. Hot coolant can cause
severe burns. Allow engine and radiator to cool.
2. Slowly remove the pressure cap to relieve any cooling
system pressure.
3. Place a suitable drain pan underneath the radiator fitting on
the front RH side of the vehicle.
4. Drain the coolant from the radiator by removing the lower
coolant hose from the radiator as shown. Properly dispose
of the coolant.
5. Allow coolant to completely drain.
MAINTENANCE
Drain Here
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