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310969

Maintenance

Compressor  Oil  Fill,  Level,  and 
Drain

Before adding or changing compressor oil, make sure 
that the compressor is completely relieved of pressure.  
Oil is added at the fill cap on a pipe on the rear of the 
crankcase. A drain line is located on the rear panel of 
the machine. Proper oil level is to the “FULL” line 
on the dipstick, when the unit is shut down and has 
had time to settle. The machine must be level when 
checking  the  oil.  DO  NOT  OVERFILL.  The  oil 
capacity is given in “Compressor Specifications”.

Changing the Air Intake Filter

The  air  intake  filter  is  a  heavy-duty  dry  type  high 
efficiency  filter designed  to  protect  the  compressor 
from dust and foreign objects.

Frequency  of  maintenance  of  the  filter  depends  on 
dust  conditions  at  the  operating  site.    The  filter 
element must be serviced when clogged.  A clogged 
air filter element will reduce compressor performance 
and cause premature wear of components.

Changing the Hydraulic Oil Cooler

The interior of the oil cooler should be cleaned when 
the pressure drop across it at full flow exceeds 25 PSI. 
First,  remove  the  cooler.  Then,  circulate  a  suitable 
solvent to dissolve and remove varnish and sludge. 
Then flush the cooler generously with hydraulic oil. 
Reinstall  the  cooler.  Once  the  cooler  is  reinstalled, 
fill the hydraulic system with the proper fluid to their 
appropriate levels. 

Piston Ring Replacement

Shut  down  the  machine  and  allow  to  cool  for 
approximately 10 minutes. Next, verify entire system 
pressure  is  relieved  before  proceeding.  Then, 
disconnect  air  inlet  system  tubes.  Now  disconnect 
3/4” discharge jumper hose and 3/4” discharge hose. 
Unscrew the head nuts and remove the heads. 

Remove  the  cylinder  bolts  and  tap  the  sides  of  the 
cylinder  several  times  to  break  it  loose  from  the 
gasket. Next, rock the cylinder back and forth and lift 
until it is free. Lift it off of the pistons. To remove the 
old gasket material, just a single edged razor blade or 
putty knife. 

Summary of Contents for BA440 PISTON

Page 1: ...http www bossair com Pක ඌඝඋග Mඉඖඝඉඔ BA440 PISTON Hydraulic Air Compressor This manual must be read carefully before using your Boss Industries LLC BA440 PISTON Store in a safe and convenient location for future reference ...

Page 2: ... 2 310969 ...

Page 3: ...n Procedure 12 Operating Conditions 12 Maintenance 13 Lifetime Warranty Information 13 Recommended Spare Parts List 13 Maintenance Chart 14 Compressor Oil 15 Compressor Oil Fill Level and Drain 16 Changing the Air Intake Filter 16 Changing the Hydraulic Oil Cooler 16 Piston Ring Replacement 16 Oil Pump Replacement 18 Crankshaft and Bearing Replacement 18 Troubleshooting 20 Low Oil Pressure 20 No O...

Page 4: ...e well acquainted with your new machine Doing this will increase your safety and maximize the life of the machine While this manual is written to be as accurate as possible Boss Industries LLC strives to continually improve the efficiency and performance of its machines As a result sometimes there may be slight differences between a given version of the manual and the machine ...

Page 5: ... 5 310969 Safety General Safety Overview ...

Page 6: ... 6 310969 Safety Safety Precautions The following safety precautions are a general guide to safe operation of the equipment ...

Page 7: ... 7 310969 Safety Safety Precautions continued ...

Page 8: ... 1 2 NPT Overall Dimensions 26 50 L X 23 W X 19 75 H Weight 180 lbs CALCULATIONS PERFORMED 85 EFFICIENCY MECHANICAL AND 96 EFFICIENCY VOLUMETRIC SPECIFICATIONS SUBJECT TO CHANGE WITHOUT PRIOR NOTICE BA440 system is to run intermittently When the BA440 is installed with other hydraulic drive equipment it will require a dedicated flow line If other hydraulics are required the reservoir size should b...

Page 9: ...t air to enter the air filter and the hot air to exhaust without recirculating into the machine A minimum of 10 of clearance is needed for the hot discharge air from the cooler Cool ambient air is drawn in from under the frame One last consideration in the mounting should be the routing of hydraulic hoses Be sure these can be safely run to the hydraulic manifold on the machine The unit should be s...

Page 10: ...ld be made from a good quality high pressure min 3000 PSI hydraulic hose 1 2 or 3 4 i d The return line can be made from a medium pressure min 1000 psi hydraulic hose 3 4 i d Care should be taken to see that the hoses are not installed with kinks or bends that inhibit flow of the hydraulic oil Lack of flow could result in damage to the motor and compressor Lastly check to make sure hoses are not i...

Page 11: ...hat proper amount of fluids can be added I Fuel to provide three hours of operation II Hydraulic fluid levels may have to be topped off after test III Compressor A Add oil if needed B Additional oil may need to be added after test C Top off oil level to the FULL line on the dipstick when finished with test II Any other applicable fluids III Transmission fluid and PTO box Machine Documentation Reco...

Page 12: ...e compressor Installation Operation Shutdown Procedure I Disengage compressor circuit II Relieve system of stored air Operating Conditions The following conditions should exist for maximum performance of the compressor The machine should be as close to level as possible when operating Ambient temperature for operation should be below 100 F 38 C The machine may experience high temperature shutdown ...

Page 13: ...us on your BA440 PISTON the required maintenance intervals listed on the following page must be obeyed Recommended Spare Parts List PART NUMBER DESCRIPTION 80279 Kit Repair Reed Valve 300854 Element Air Filter 301267 Spider Curved Jaw 302936 Kit Repair HYD Motor Seal 310610 2Q Lubricant ShieldWorks 2Q ...

Page 14: ...NANCE DAILY 1 Check crankcase oil level 2 Drain Condensation from air receiver WEEKLY 1 Inspect the air intake 2 Check the cylinder head stud torque See NOTE 2 3 Check the operation of the receiver safety values EVERY 3 MONTHS 1 Change the crankcase oil See NOTE 1 2 Check cooler fins for dirt and obstructions Clean if needed EVERY 6 MONTHS 1 Inspect the drive coupling for wear 2 Change the air cle...

Page 15: ...the individual supplier if they choose not to use the recommended Boss Industries LLC ShieldWorks rotary screw lubricant The lubricant supplier s recommendation must therefore be based upon not only the following general characteristics but also upon his or her own knowledge of the suitability of the recommended lubricant in helical screw type air compressors operating in the particular environmen...

Page 16: ...ressor performance and cause premature wear of components Changing the Hydraulic Oil Cooler The interior of the oil cooler should be cleaned when the pressure drop across it at full flow exceeds 25 PSI First remove the cooler Then circulate a suitable solvent to dissolve and remove varnish and sludge Then flush the cooler generously with hydraulic oil Reinstall the cooler Once the cooler is reinst...

Page 17: ...otate the rings so that the gaps of the three rings are 120 degrees apart Lightly lubricate the inside of the cylinder and rotate the crankshaft so that a piston is at the top of the stroke Compress the rings with a ring compressor and slide the cylinder over the piston Repeat this step for the other piston Now slide the cylinder down until it mates with the crankcase Start all cylinder mounting b...

Page 18: ...pump cover the pump is lose Now you can insert the two remaining bolts and torque to 180 in lbs The bolts should be torqued in a diagonal pattern Finally install the air compressor in the vehicle and connect air lines and wiring Crankshaft and Bearing Replacement If it is necessary to replace the crankshaft related components must also be replaced Replace both bearings both races the key pump coll...

Page 19: ...all the front bearing housing with gasket Torque the bolts to 180 in lbs as shown below Slide the crankshaft into the crankcase and generously lubricate the bearing race and install rear bearing housing and gaskets Next install the oil pump and then the connecting rods Thoroughly oil the crankshaft rods before installing them When installing the rods make certain that the tabs are aligned on the s...

Page 20: ...sor will not start check the following I No power supplied to compressor II Internal circuit breaker tripped III Hydraulic system not engaged IV Defective pressure switch Compressor Engages But Will Not Pressurize Tank If the compressor starts but the tank does not become pressurized check the following I Air leak in plumbing II Worn piston rings or valve plates Compressor Does Not Recover Pressur...

Page 21: ... 21 310969 Warranty ...

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