5: Maintenance
185 T3 Kubota User Manual
02250223-054 R01
44
Subject to EAR, ECCN EAR99 and related export control restrictions.
3. Adjust the pressure regulator so that the
compressor maintains 115 psig (8 bar).
4. Gradually open the service valve to atmo-
sphere until the engine comes up in speed
and sump pressure is held at 100 psig
(6.9 bar). At this point, set the engine high
speed to its specified setting by adjusting the
high idle threaded rod located on the engine
speed control. To raise or lower the speed,
lengthen or shorten the rod respectively.
5. Open the service valve to 100 psig (6.9 bar)
(rated full load pressure) and recheck top
engine speed and control response. Close
the service valve and allow the compressor
to cycle and re-check low engine speed
(idle).
5.9.7
Bearing lubrication
. Proper lubrication of the portable
compressor’s bearing axle is critical to its proper function
and reduction of wear on this part. Wheel bearings
should be lubricated at least every 12 months, or more,
to ensure proper performance and minimize wear. Use a
wheel bearing grease that conforms to MILSPEC MIL-G-
Figure 5-5: Control system adjustment
1. Compressor unit
A. .25 OD white
2. Receiver tank
B. .38 OD blue
3. Engine speed control cylinder
C. .25 OD black
4. Warm-up control valve
D. .38 OD green
5. Pressure regulator / blowdown manifold
E. .38 OD orange
F. .38 yellow
G. .38 OD red
H. .31 OD white (to fitting at unit air filter)
