Chapter 5 Compressor Lubrication & Maintenance
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WARNING
AVOID PERSONAL INJURY, PROPERTY DAMAGE, AND VOIDED WARRANTY! Do not
substitute element. Use only a genuine IMT replacement element. This element is rated at
200 psi working pressure. Use of any other element may be hazardous and could impair the
performance and reliability of the compressor.
HYDRAULIC OIL COOLER & COMPRESSOR AFTER/OIL COOLER COMBINATION
The interior of the oil cooler should be cleaned when the pressure drop across it at full flow
exceeds 25 PSI. Follow these steps to clean the oil cooler:
1
Remove cooler.
2
Circulate a suitable solvent to dissolve and remove varnish and sludge.
3
Flush the compressor oil cooler section generously with IMT compressor lubricant. Do not
use oil to flush the aftercooler portion on the combo cooler.
4
After coolers are reinstalled, fill the compressor and hydraulic system with the proper fluids,
to their appropriate levels. Change compressor oil after 50 hours of normal operation.
SHAFT SEAL INSTALLATION
1
Remove all hoses and fittings from the compressor unit, including 1/2" discharge line, 3/4"
main oil injection, 1/4" regulator, 1/4" blowdown, and 3" air intake.
2
Strap compressor unit. Remove 7 mounting screws from mounting bracket.
3
Remove hydraulic motor and coupling hub from the compressor shaft along the key.
4
Remove (5) socket head retaining bolts on cover. Slide cover off shaft. The cover has the
seal and snap ring assembly within.
5
Press old snap ring and seal off the cover for assembly of new seal.
6
Pull seal wear sleeve off shaft with puller. Adding heat to one area only on wear sleeve will
help enlarge and aid in removal.
7
Clean shaft and surface of bearing. Remove all burrs from shaft where the wear sleeve gets
installed.
8
Press new wear sleeve onto shaft. Oil. To aid in installation, oil heat new wear sleeve to
approximately 212° F.
9
Clean seal cover and snap ring with solvent before installation.
10
Press new seal (included in repair kit) into cover. Insert snap ring.
11
Place the assembly tool on the drive shaft until it sits on the end of the wear sleeve. Slightly
lubricate the assembly tool on the external surface. Add Loctite 573 to seal cover.
