Service Repair Manual
Model: 322-A N EXCAVATOR 9JL
Configuration: 322 L, 322 LN AND 322 N EXCAVATORS 9JL00001-UP (MACHINE) POWERED BY 3116 ENGINE
Disassembly and Assembly
Air Conditioning and Heating R134a for All Caterpillar Machines
Media Number -SENR5664-31
Publication Date -01/05/2015
Date Updated -23/10/2018
SMCS - 1808; 7309
Personal injury can result from contact with refrigerant.
This system is under pressure at all times, even if the engine is not
running. Heat should never be applied to a charged system.
Contact with refrigerant can cause frost bite. Keep face and hands away
to help prevent injury.
Protective goggles must always be worn when refrigerant lines are
opened, even if the gauges indicate the system is empty of refrigerant.
Always use caution when a fitting is removed. Slowly loosen the fitting.
If the system is still under pressure, evacuate the system recovering the
refrigerant before removing the fitting.
Personal injury or death can result from inhaling refrigerant through a
Inhaling air conditioner refrigerant gas through a lit cigarette or other
smoking method or inhaling fumes released from a flame contacting air
conditioner refrigerant gas, can cause bodily harm or death.
Do not smoke when servicing air conditioners or wherever refrigerant
gas may be present.
Before any checks of the air conditioning and heating system are made,
move the machine to a smooth horizontal surface. Lower all implements
322 L, 322 LN AND 322 N EXCAVATORS 9JL00001-UP (MACHINE) POWERED ...
to the ground. Make sure the transmission is in neutral or park and that
the parking brake is engaged. Keep all other personnel away from the
machine or where they can be seen.
Personal injury can result from hot coolant. Any contact with hot
coolant or with steam can cause se