BENDIX TU-FLO 700 COMPRESSOR User Manual

1
®
SD-01-335
Bendix
®
TU-FLO
®
700 Air Compressor
COMPRESSOR NAMEPLATE
SER
NO.
BW
NO.
MANUFACTURED BY
BENDIX
TU-FLO 700
Two methods are employed for cooling the Tu-Flo
®
700
compressor during operation. The cylinder head is
connected to the engine’s cooling system, while the cylinder
has external fins for efficient air cooling.
All Tu-Flo
®
700 compressors utilize the engine’s pressurized
oil system to lubricate the internal moving parts. A nameplate
is attached to the crankcase to identify the compressor.
The nameplate displays a Bendix piece number or in some
cases an engine or vehicle manufacturer’s piece number,
along with a serial number.
DESCRIPTION
The function of the air compressor is to provide and main-
tain air under pressure to operate devices in the air brake
and/or auxiliary air systems
The Tu-Flo
®
700 compressor is a two cylinder, single stage,
reciprocating compressor with a rated displacement of 15.5
cubic feet of air per minute at 1250 R.P.M. The Tu-Flo
®
700
compressor is constructed from three major assemblies,
the head, the cylinder block and the crankcase.
The head houses the discharge valving and is installed on
the upper portion of the cylinder block. The cylinder block
contains the cylinder bores and inlet valves and is mounted
to the crankcase. The crankcase houses the crankshaft
and main bearings.
Various mounting and drive configurations, required by the
numerous vehicle engine designs, are available. Two
governor mounting pads are located on either side of the
cylinder block to provide convenient governor mounting.
EXTERIOR
BENDIX
®
TU-FLO
®
700 AIR COMPRESSOR
(CROSS SECTION)
CRANKCASE
DISCHARGE
CAP NUT
PISTON
PISTON
RINGS
CRANKSHAFT
CONNECTING
ROD
DISCHARGE
VALVE
SPRING
INLET
VALVE
SPRING
INLET
VALVE
DISCHARGE
VALVE
DISCHARGE
VALVE SEAT
UNLOADER
MECHANISM

BENDIX TU-FLO 700 COMPRESSOR Specifications

General

Brand	BENDIX
Model	TU-FLO 700 COMPRESSOR
Category	Air Compressor
Language	English

Summary

DESCRIPTION

COMPRESSOR & THE AIR BRAKE SYSTEM

DUTY CYCLE

PREVENTIVE MAINTENANCE

GENERAL SERVICE CHECKS

REMOVING AND DISASSEMBLY

INSPECTION OF PARTS

CRANKSHAFT

Inspects crankshaft surfaces, journals, and oil passages for wear or damage.

REPAIRS

ASSEMBLY

INSTALLING THE CRANKSHAFT

Provides steps and torque specifications for installing the crankshaft.

PISTONS AND CONNECTING RODS

Describes the assembly of pistons, connecting rods, and wrist pins.

TESTING REBUILT COMPRESSOR

COMPRESSOR TROUBLESHOOTING

WARNING! PLEASE READ AND FOLLOW THESE INSTRUCTIONS TO AVOID PERSONAL INJURY OR DEATH:

Introduction to the Air Brake Charging System

Air Brake Charging System Troubleshooting

2.0 Oil on the Outside of the Compressor

2.2 Oil leaking from compressor:

Identifies potential internal compressor leaks causing oil to appear externally.

4.0 Oil in Supply or Service Reservoir (air dryer installed)

Temperature

Addresses high temperatures as a cause for oil passing into the air system.

Duty cycle too high

Links high duty cycles to potential oil in reservoirs due to compressor strain.

9.0 Air brake charging system seems slow to build pressure.

(f) Restricted discharge line.

Identifies restricted discharge lines as a cause for slow air build-up.

(g) Restricted air inlet (not enough air to compressor).

Covers restricted air inlet lines impacting compressor performance.

(i) Compressor malfunction.

Points to compressor malfunction as a cause for slow pressure build-up.

10.0 Air charging system doesn't build air.

11.0 Compressor safety valve releases air (Compressor builds too much air).

15.0 Compressor constantly cycles (compressor remains unloaded for a very short time.)

16.0 Compressor leaks air

17.0 Compressor leaks coolant

Explains potential reasons for coolant leaks from the compressor.

18.0 Noisy compressor (Multi-cylinder compressors only)

Discusses causes for a noisy compressor, specifically for multi-cylinder units.

Test 1: Excessive Oil Leakage at the Head Gasket

Test 2: Air Brake System and Accessory Leakage

Test 3: Air Compressor Discharge Temperature and Air Dryer Inlet Temperature*

Test 4: Governor Malfunction

Test 6: Compressor Unloader Leakage

Appendix A: Information about the BASIC Test Kit (Bendix P/N 5013711)

Bendix® Air System Inspection Cup (BASIC) Test Information

Provides information and instructions for using the Bendix BASIC Test Kit.

Subject: Air Brake System - Cold Weather Operation Tips

Discharge Lines

Provides recommendations for discharge line installation and length for cold weather.

Subject: Additional Cold Weather Operation Tips for the Air Brake System

Thawing Frozen Air Lines