a) Mounting points
All compressors should be mounted firmly and securely to the engine bracket using
manufacturers’ standard specifications. The following chart outlines the minimum mounting
point utilisation for each Unicla model.
b) Mounting angle
The mounting angle
for each model must
be as follows:
c) Lug type mounting
When mounting Unicla UP series compressors (lug mount type)
there must be no gap between the bracket and the lug. This will
ensure additional stress is not placed on the compressor and noise
transmission is kept to a minimum. Universal sliding bushes or shims,
or Unicla shim kit part no 2900-000010 must be used as follows:
4. Belt alignment and tension
a) Alignment
The compressor clutch pulley must be in perfect alignment
with the drive pulley on the engine and any auxiliary idler or
adjusting system. Unacceptable alignment is shown in the
following diagram
b) Tension
Belt tension adjustment should be made so the belt is taut, but not to excess to cause excessive
bearing loads. Due to the pulsating load created by compressors, the belt tension must be
greater than for a normal steady load. The tension must be within the manufacturers’ guidelines
for the specific belt used to drive the compressor, or in the absence of this information, Unicla
recommends belt deflection of 10 - 20 mm /meter after tensioning, or 50kg of tension for most
applications. This tension must be checked again and tighten back to specification after 36-48
hours of initial operation.
3. Mounting
3.
Compressor type
Mounting description
Minimum mounting requirement
UC
Alternator or swing type
Three lugs
UP
Lug type
Four lugs
UX
Direct or bolt through type
Four points
UWX
Multiple direct mounting
Six points
