Bendix-commercial-vehicle-systems TU-FLO 1000 AIR COMPRESSOR Manuel d'utilisateur

1TU-FLO® 400 Air Compressor TU-FLO® 500 Air CompressorTU-FLO® 1000 Air Compressor®Bendix® TU-FLO® 400, 500, 1000 Air CompressorsSD-01-326

10CRANKCASE AND END COVERSCheck for cracks or broken lugs in crankcase and end covers.Also check their oil passages to make sure they are openand clea

11CRANKSHAFTCheck crankshaft screw threads, keyways, tapered endsand all machined and ground surfaces for wear, scores, ordamage. Crankshaft journals

12Slightly worn or scratched inlet valves can be reclaimed bylapping them on a piece of fine crocus cloth on a flat surface,but it is suggested that n

13BASEPLATESELF-LUBRICATED TYPE COMPRESSORSInstall oil pump piston and rod on crankshaft.Oil rod bearing fit must be the same as specified forconnecti

143. Do not attempt to install, remove, disassemble orassemble a component until you have read andthoroughly understand the recommendedprocedures. Us

15TABULATED DATATU-FLO® 400 TU-FLO® 500 TU-FLO® 1000Air Compressor Air Compressor Air CompressorNumber Cylinders 2 2 4Bore Size 2.0625" 2.5"

*This guide is only for vehicles that use desiccant air dryers.The guide consists of an introduction to air brake charging systemcomponents, a table s

17Introduction to the Air Brake Charging SystemPowered by the vehicle engine, the air compressorbuilds the air pressure for the air brake system. Thea

18Compressor with up to 25% duty cycleFootnotes:1 With increased air demand the air dryer cartridge needs to be replaced more often.2 Use the drain va

19üAir Brake Charging System TroubleshootingHow to use this guide:1.0 Oil Test CardResultsNot a valid test.Discontinue using this test.Do not use thi

2DESCRIPTION AND OPERATIONGENERALThe function of the air compressor is to build up and maintainthe air pressure required to operate air powered device

Symptom: What it may indicate: What you should do:202.2 Oil leakingfrom compressor:(a)Excessive leak at head gasket.(b)Leak at bottom cover plate.(c)

214.0 Oil in Supply orService Reservoir(air dryer installed)(If a maintained Bendix®PuraGuard® system filteror Bendix® PuraGuard®QC™ oil coalescing f

Symptom: What it may indicate: What you should do:22(e)Air compressor discharge and/orair dryer inlet temperature too high.(f) Insufficient coolant fl

Symptom: What it may indicate: What you should do:23(i) Poorly filtered inlet air (poor airquality to compressor).(j) Governor malfunction or setting

Symptom: What it may indicate: What you should do:248.0 Oil in ping tankor compressor dis-charge aftercooler.Air brake charging system isfunctioning

Symptom: What it may indicate: What you should do:25(g)Restricted air inlet (not enough airto compressor).ð Check compressor air inlet line forrestric

Symptom: What it may indicate: What you should do:2610.0 Air chargingsystem doesn’tbuild air.(a)Governor malfunction*.(b) Restricted discharge line.(

Symptom: What it may indicate: What you should do:2715.0 Compressorconstantly cycles(compressorremains unloadedfor a very shorttime.)(a)Air brake cha

Symptom: What it may indicate: What you should do:28This guide attempts to cover mostcompressor system problems. Here aresome rare sources of problems

29TestsExterior leaks at the head gasket are not a sign that oil is being passedinto the air charging system. Oil weepage at the head gasket does not

3had either die cast aluminum, cast ductile iron, or forgedsteel rods which were not rifle drilled but were drilled at thetop of the rod. The wrist p

1. Ensure that the governor control line from thereservoir is located at or near the top of thereservoir. (This line, if located near the bottomof the

31NOTES

HighSTART BASIC TESTIs this atransit vehicle, bulkunloader, or has morethan 5 axles?YES, this is a highair usevehicle.NO, this is a low airuse vehicle

Footnote 1: Note: Typical air dryer cartridge replacement schedule is every 3 yrs/ 300K miles for low air use vehicles and every year/100K miles forhi

Park the vehicle on level ground and chock wheels. Build system pressure to governor cut-outand allow the pressure to stabilize for one minute.1: Obse

35Technical BulletinBulletin No.: TCH-008-021 Effective Date: 11/1/92 Page: 1 of 2Subject: Air Brake System - Cold Weather Operation TipsAs the cold w

36Bulletin No.: TCH-008-021 Effective Date: 11/1/92 Page: 2 of 2High Duty Cycle Vehicles (City Transit Coaches, Refuse Haulers, Etc.)The maximum disch

Technical BulletinBulletin No.: TCH-008-022 Effective Date: 1/1/1994 Page: 1 of 1Subject: Additional Cold Weather Operation Tips for the Air Brake Sys

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4As the piston reaches the top of its stroke and starts down,the discharge valve spring returns the discharge valve to itsseat. This prevents the com

BW1420 © 2004 Bendix Commercial Vehicle Systems LLC All rights reserved. 10/2004 Printed in U.S.A.40

5PREVENTIVE MAINTENANCERegularly scheduled maintenance is the single mostimportant factor in maintaining the air brake charging system.Refer to Table

6FIGURE 14 - POLYURETHANE SPONGE STRAINERFIGURE 15 - DRY ELEMENT- PLEATED PAPER AIRSTRAINERFIGURE 16 - COMPRESSOR INTAKE ADAPTERDRY ELEMENT - PLEATED

7Prelubricate compressor cylinder walls and bearings withclean engine oil before assembling compressor.Always use a new mounting gasket and be sure oi

8Straighten the prongs of the connecting rod bolt lock strapand remove the bolts and bearing caps. Push the pistonwith the connecting rods attached o

9CLEANING AND INSPECTION OF PARTSCLEANINGAll parts should be cleaned thoroughly in a good cleaningsolvent before inspection.CYLINDER HEAD ASSEMBLYRemo