background image

CB-9A-040     page 20 

MAINTENANCE

 

 
 

OIL PUMP REPLACEMENT

 

1. 

Remove the oil pump cover bolts 
and the oil pump cover. 

2. 

Remove the cover O-ring, oil pump 
ring and shaft assembly. 

3. 

Clean, inspect and replace parts as 
necessary. 

4. 

Place the oil pump shaft assembly 
(complete with oil pump rotor, key, 
retainer ring and new shaft O-ring) 
into the bearing housing.  If the 
bearing housing is bolted to the 
crankcase, the slot in the end of the 
oil pump shaft must align with the 
pin in the end of the crankshaft. 

5. 

Place the oil pump ring over the 
rotor.  Place the cover O-ring into 
the bearing carrier (do 

not

 place it 

on the oil pump cover). 

6. 

Orient the oil pump cover with the 
upper direction arrow (the one labeled 'TOP') for the proper crankshaft rotation direction. 

7. 

Tighten the oil pump cover bolts by hand.  

NOTE: If the pump cover cannot be drawn flush with the 

bearing carrier by hand, either the oil pump shaft or other parts are not properly aligned.  DO NOT 
USE A WRENCH AT THIS POINT AS THE OIL PUMP WILL BE DAMAGED IF INSTALLED 
INCORRECTLY.

 

8. 

Once the oil pump cover is secured by hand, the bolts may be evenly tightened per the Bolt Torque Table. 

 

 
9. 

Verify that the proper plugs are installed in the oil pump cover per the above sketches. 

Summary of Contents for HD172A

Page 1: ...TICALLY TESTED COMPRESSOR MUST BE ISOLATED WATER ENTERING THE UNIT CAN CAUSE CORROSION AND DAMAGE NOTE NAMEPLATE DATA HERE MODEL HD ID SERIAL NUMBER TABLE OF CONTENTS GENERAL INFORMATION 2 Compressor...

Page 2: ...you should 1 Note the nameplate data in the space provided above 2 Obtain the appropriate parts lists for the model in question 3 These compressors are used on a wide variety of gasses Before doing an...

Page 3: ...5 Glass Moly Filled M Poly Filled PTFE A SEAL PACKING ORIENTATION Field 6 All Lips up 1 Top Lips Down Bottom Up Tube to Stage 1 outlet 2 Top Lips Up Bottom Down 3 Top Lips Down Bottom Up Tube to Stag...

Page 4: ...is suggested that the valves and piston rings be inspected after the first few hundred hours of operation This will give an early indication of any abnormal problems and allow for corrective action to...

Page 5: ...eric Pressure or above Vacuum to 25 psia Under 5 psia Service General Gas Transfer Toxic Flammable or otherwise Hazardous Gases General Gas Transfer Special Upper Distance Piece Connections Plugged Pu...

Page 6: ...CB 9A 040 page 6 GENERAL INFORMATION SEAL ORIENTATION DOUBLE SEAL COMPRESSORS SEAL ORIENTATION ALL TRIPLE SEAL COMPRESSORS...

Page 7: ...l port allowing for the use of an optional electric float switch which provides protection to the compressor by stopping the compressor when a high liquid level is present in the liquid trap The elect...

Page 8: ...hor bolts be set in concrete When compressors are to be located on existing concrete floors holes should be drilled into the concrete to hold the anchor bolts NOTE To keep vibration at a minimum in ad...

Page 9: ...unning time Also retighten all holddown bolts flywheel bolts etc after 60 minutes running time MAINTENANCE MAINTENANCE AND TROUBLESHOOTING MUST BE DONE BY AN INDIVIDUAL EXPERIENCED WITH COMPRESSOR MAI...

Page 10: ...iver Flat Blade Nameplate screws Packing Installation Pliers Rubber Mallet Arbor Press Wrist Pin Removal Bearing Puller Crankshaft Bearings Torque Wrench 0 to 45 ft lb range Various Hoist useful Cylin...

Page 11: ...Y Below 0 F 18 C 0 to 32 F 18 to 0 C 32 to 80 F 0 to 27 C 80 F 27 C and above SAE 5W SAE 10W SAE 20W SAE 30W Series 170A 370A 610A Quarts 2 3 6 To change the oil drain the crankcase then clean the oil...

Page 12: ...the piston rods The upper packing box O rings will slide off with the packing boxes For disassembly of the packing boxes refer to Packing Replacement 11 After removing the packing boxes remove the lo...

Page 13: ...e b Lubricate the inside bore of the crosshead guide with light oil c Set the crosshead guide over the piston rods and the crossheads and slowly lower it against the crankcase Make certain that the cr...

Page 14: ...ue Table in an alternating pattern h It is important that the proper number of shims be installed under the piston To check rotate the flywheel by hand to bring one piston to the top 1 Measure the dis...

Page 15: ...mportant to install the suction and discharge valves in the correct location in the cylinder head NOTE The valves may be removed without removing the cylinder head from the cylinder Be sure to remove...

Page 16: ...r and retainer ring Typical Valve Assemblies 4 To reinstall valves a Install a new valve gasket into the cylinder head remove any old gaskets b Install the valve assembly in the cylinder head Make sur...

Page 17: ...wn screw and tighten according to the Bolt Torque Table f Install the valve cap or unloader assembly and O ring A little oil or grease on the O ring will help hold it in place during installation 5 Af...

Page 18: ...ring Note To ease installation on the second retainer ring use a screwdriver handle and press on the last washer to compress the seal spring slightly c Two seal packing boxes only Insert the oil defl...

Page 19: ...g cone onto each end of the crankshaft with the tapered end outward The bearing race should rest against the shoulder on the crankshaft e Lubricate the bearings with grease 8 Install the crankshaft th...

Page 20: ...mp ring over the rotor Place the cover O ring into the bearing carrier do not place it on the oil pump cover 6 Orient the oil pump cover with the upper direction arrow the one labeled TOP for the prop...

Page 21: ...pressurized to prevent air or moisture from entering the unit NOTICE Tag the unit with a warning that it is pressurized 3 If a purge gas is not available fog oil into the compressor suction while rot...

Page 22: ...9 9 Low Oil Level Check and fill as necessary 10 10 Dirty Inlet Strainer Clean Inlet Strainer Gas Leaking From Crankcase Breather 11 Faulty Worn Packing Replace Packing 12 12 Piston Rod Scored Replace...

Page 23: ...CB 9A 040 page 23 NOTES...

Page 24: ...1809 Century Avenue Grand Rapids Michigan 49503 U S A 616 241 1611 Fax 616 241 3752 1108 So Portland Avenue Oklahoma City 73108 U S A 405 942 6622 Fax 405 942 2855...

Reviews: