® cubic feet of air per minute at 1250 R.P.M. The Tu-Flo The nameplate displays a Bendix piece number or in some compressor is constructed from three major assemblies, cases an engine or vehicle manufacturer’s piece number, the head, the cylinder block and the crankcase.
MACK "FOXHEAD" CUMMINS VARIOUS COMPRESSOR MOUNTINGS DETROIT DIESEL MACK OPERATION reservoir into the cavity beneath the unloader pistons. This lifts the unloader pistons and plungers. The plungers move The compressor is driven by the vehicle engine and is up and hold the inlet valves off their seats (see Figure 4). operating continuously while the engine is running.
2 of Table A in the Troubleshooting section) assumes FIGURE 1B - DISCHARGE LINE SAFETY VALVE a compressor with a normal (less than 25%) duty cycle, operating in a temperate climate. See Bendix and/or other air dryer manufacturer guidelines as needed.
"cut-out" setting. For vehicles with accessories that are sensitive to small FIGURE 2 - INTAKE ® amounts of oil, we recommend installation of a Bendix PuraGuard ® ™ oil coalescing filter, designed to minimize the amount of oil present.
COOLING DRY ELEMENT—PLEATED PAPER AIR STRAINER Air flowing through the engine compartment from the action Every 20,000 miles or 800 operating hours: of the engine’s fan and the movement of the vehicle assists in cooling the crankcase. Coolant flowing from the engine’s Remove the spring clips from either side of mounting baffle cooling system through connecting lines enters the and remove the cover.
Every 24 months, 7200 operating hours or after each to the nearest authorized Bendix Distributor for a factory 200,000 miles: remanufactured compressor. If this is not possible, the compressor can be repaired using genuine Bendix...
A convenient method to indicate the above relationship is to Discard the inlet valves (3) and springs (2), the discharge use a metal scribe to mark the parts with numbers or lines. valves (7), springs (8) and the discharge valve seats (6) if Do not use a marking method that can be wiped off or defective.
If the pistons are removed from the rod, inspect the bronze CYLINDER BLOCK wrist pin bushing. Press out and replace the bushing if it is Clean the carbon and dirt from the inlet and unloader excessively worn. (See inspection of parts) Discard the piston passages.
be rebored or honed oversize. Oversized pistons and piston rings are available in .010 in., .020 in. and .030 in. oversizes. Cylinder bores must be smooth, straight, and round. Clearance between the cast iron pistons and cylinder bores PISTON should be between .002 in. minimum and .004 in. maximum. RINGS .002 .004...
REPAIRS ASSEMBLY General Note: All torques specified in this manual are DISCHARGE VALVES, VALVE STOPS AND assembly torques and can be expected to fall off after SEATS assembly is accomplished. Do not retorque after initial assembly torques fall. If the discharge valve seats merely show signs of slight wear, they can be dressed by using a lapping stone, grinding To convert inch pounds of torque to foot pounds of torque, compound and grinding tool.
piston and secure same by inserting the new lockwire CYLINDER HEAD through the hole in piston and wrist pin and lock the wire by Install the inlet valve springs in the cylinder head by applying snapping the short 90 section into the lockwire hole in the a turning motion to the spring after it is in the head.
® 8. Use only genuine Bendix replacement parts, COMPRESSOR TROUBLESHOOTING components and kits. Replacement hardware, IMPORTANT: The troubleshooting contained in this section tubing, hose, fittings, etc. must be of equivalent size, type and strength as original equipment and considers the compressor as an integrated component of...
This troubleshooting guide obsoletes and supersedes all previous published troubleshooting information relative to Bendix air compressors. Advanced Troubleshooting Guide for Air Brake Compressors The guide consists of an introduction to air brake charging system components, a table showing recommended vehicle maintenance schedules, and a troubleshooting symptom and remedy section with tests to diagnose most charging system problems.
(less than 25%) duty cycle, system and lubricated by the engine oil supply. operating in a temperate climate. See Bendix and/or other air dryer manufacturer guidelines as needed. The compressor's unloader mechanism and governor (along with a synchro valve for the Bendix ®...
Note: To help prevent discharge line freeze-ups, shorter discharge recommended every 250,000 miles. line lengths or insulation may be required in cold climates. (See Bendix Bulletins TCH-08-21 and TCH-08-22, included in Appendix B, for more information.) 5 For certain vehicles/applications, where turbo-charged inlet air is used, a smaller size...
Do not use this card test to diagnose û compressor "oil passing" issues. They are subjective and error prone. Use only the Bendix Air System Inspection Cup (BASIC) test and the methods described in this guide for advanced troubleshooting. The Bendix ®...
Return the vehicle to service. An optional kit (Bendix piece number 5011327 for the Bendix AD-IS ™ or AD-IP ™ ® air dryers, or 5003838 for the Bendix ® ™ AD-9 air dryer) is available to redirect the air dryer exhaust.
(1-800-247-2725) and been performed as in Column 3. speak to a Tech Team member.) ð Drain all air tanks into Bendix ® (b) If the vehicle maintenance has BASIC test been performed as recom- cup (Bendix Air System Inspection Cup).
45 degree fitting. For more Kinked discharge line shown. information on how to help prevent discharge line freeze-ups, see Bendix Bulletins TCH-08-21 and TCH-08-22 (Appendix B). Shorter discharge line lengths or insulation may be required in cold climates.
Note: After replacing a compressor, investigated. Bendix compressors are designed to residual oil may take a considerable period have a 'dry' sump and the presence of excess oil in of time to be flushed from the air brake the crankcase can lead to oil carryover.
Symptom: What it may indicate: What you should do: ð See engine service manual. A problem with engine or other engine 6.0 Excessive oil consumption in accessory. engine. The engine service manual has more information. ð Air dryers remove water and oil from the air 7.0 Oil present at Air brake charging system is air dryer cartridge...
90 degree fitting, it may be changed to a straight or 45 degree fitting. For more information on how to help prevent discharge line freeze-ups, see Bendix Bulletins TCH-08-21 TCH-08-22 (Appendix B). Shorter discharge line lengths or insulation may be required in cold climates.
45 degree fitting. For more information on how to help prevent discharge line freeze-ups, see Bendix Bulletins TCH- 08-21 and TCH-08-22 (Appendix B). Shorter discharge line lengths or insulation may be required in cold climates.
Symptom: What it may indicate: What you should do: ð Inspect delivery lines to reservoir for 12.0 Air dryer (a) Restriction between air dryer and safety valve reservoir. restrictions and repair as needed. releases air. ð Verify relief pressure is at vehicle or (b) Air dryer safety valve malfunction.
Symptom: What it may indicate: What you should do: ð Check for leaking, damaged or defective (a) Compressor leaks 16.0 Compressor connections or ports. leaks air compressor fittings, gaskets, etc. Repair or replace as necessary. ð Go to Test 6 on page 27. (b) Compressor unloader mechanism malfunction.
Tests Test 1: Excessive Oil Leakage at the Head Gasket Exterior leaks at the head gasket are not a sign that oil is being passed into the air charging system. Oil weepage at the head gasket does not prevent the compressor from building air. LOOK Observe the amount of weepage from the head gasket.
Test 6: Compressor Unloader Leakage off and charge the unloader port by allowing air Bendix ® Compressors: Park vehicle, chock pressure to enter the hose and unload the wheels, and follow all standard safety procedures.
YES, number of days was known (30 - 90 days) with a Bendix air dryer that are properly maintained.) If, in cold weather conditions, the 30 day air tank drain schedule is longer Replace the Compressor. If under warranty, follow standard procedures.
Footnote 2: To get an accurate reading for the amount of oil collected during a 30 day period, ask the customer not to drain the air tanks before returning. (Note that 30-90 days is the recommended air tank drain schedule for vehicles equipped with a Bendix air dryer that are properly maintained.) If, in cold weather conditions, the 30 day air tank drain schedule is longer than the customer's usual draining interval, the customer...
Appendix A continued: Information about the BASIC Test Kit (Bendix P/N 5013711) ® Filling in the Checklist for the Bendix Air System Inspection Cup (BASIC) Test Note: Follow all standard safety precautions. For vehicles using a desiccant air dryer. STEP C - How to Use the BASIC Test 1.
Last 3 feet, including fitting at the end of the discharge line, must be insulated with ½ inch thick closed cell polyethylene pipe insulation. If the discharge line length must be less than 6 feet or greater than 16 feet, contact your local Bendix representative.
10-16 ft. ½ in. None If the discharge line length must be less than 10 feet or greater than 16 feet, contact your local Bendix representative. System Leakage Check the air brake system for excessive air leakage using the Bendix “Dual System Air Brake Test and Check List”...
Appendix B: Continued Technical Bulletin Bulletin No.: TCH-008-022 Effective Date: 1/1/1994 Page: 1 of 1 Additional Cold Weather Operation Tips for the Air Brake System Subject: Last year we published Bulletin PRO-08-21 which provided some guidelines for “winterizing” a vehicle air brake system.
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