DIESEL ENGINE COMPRESSION
TESTER SET
93039
OPERATING INSTRUCTIONS
®
3491 Mission Oaks Blvd., Camarillo, CA 93011
TO PREVENT SERIOUS INJURY,
READ AND UNDERSTAND ALL WARNINGS
AND INSTRUCTIONS BEFORE USE.
©
®
Copyright 2005 by Harbor FreightTools . All rights reserved. No portion of this manual or
any artwork contained herein may be reproduced in any shape or form without the express
written consent of Harbor FreightTools.
For technical questions and replacement parts, please call 1-800-444-3353.
11.
REPLACEMENT PARTS AND ACCESSORIES. When servicing, use only identical
replacement parts. Only use accessories intended for use with this product.
Approved accessories are available from Harbor Freight Tools.
12.
13.
14.
MAINTAIN THIS PRODUCT WITH CARE. Keep this tool clean and dry for better
and safer performance.
MAINTENANCE: For your safety, service and maintenance should be performed
regularly by a qualified technician.
USETHE RIGHT PRODUCT FORTHE RIGHT JOB. There are certain applications
for which this product was designed. Do not use small equipment, tools or attachment
to do the work of larger industrial equipment, tools or attachments. Do not use this
product for a purpose for which it was not intended. NOT FOR OXYGEN SERVICE
USE.
15.
16.
PRIOR TO USING THIS PRODUCT, READ AND ADHERE TO ALL
INSTRUCTIONS AND SAFETY PRECAUTIONS AS OUTLINED INTHEVEHICLE
MANUFACTURER’S MANUAL AND ENGINE DIAGNOSTIC/REPAIR MANUALS.
ALWAYS RELEASE THE PRESSURE PROPERLY USING THE PRESSURE
RELEASE VALVE (see page 4) BEFORE DISCONNECTING THE ADAPTER.
17.
18.
USE EXTREME CARE AROUND HOT OR MOVING ENGINE PARTS.
DO NOT EXCEEDTHE MAXIMUM PRESSURE CAPACITY OFTHISTOOL (1,000
PSI /70 BAR). Exceeding the maximum pressure capacity could cause serious
personal injury and/or property damage.
19.
20.
USE THE COMPRESSION TESTER ONLY IN WELL VENTILATED AREAS. A
running engine produces carbon monoxide. Carbon monoxide is a colorless,
odorless, gas that, if inhaled, can cause serious injury or death.
WHEN WARMING UP AN ENGINE IN PREPARATION FOR COMPRESSION
TESTING, MAKE SURE THE VEHICLE’S TRANSMISSION IS PLACED IN
“PARK”, (OR NEUTRAL FOR A MANUAL TRANSMISSION) AND THE
EMERGENCY BRAKE IS APPLIED.
21.
WARNING: The brass components of this product contain lead, a chemical known
to the State of California to cause cancer and birth defects (or other reproductive
harm). (California Health & Safety Code § 25249.5 et seq.)
UNPACKING
When unpacking, check to make sure the parts listed on the next page of this manual
are included. If any parts are missing or broken, please call Harbor Freight Tools at the
number shown on the cover of this manual as soon as possible.
SKU 93039
For technical questions, please call 1-800-444-3353.
Page 3
PARTS LIST / ASSEMBLY DIAGRAM
Part
Diagram
Description
Engine Applications
Gauge Assembly
(Includes Gauge, Hose,
and Coupler)
1
-
®
Cummins
2
3
4
Fuel Injector Adapter
2.9 L, 3.9 L, 5.9 L
These 5.5" Bore
Cummins Engines:
Fuel Injector Adapter NH (855 Cubic Inches),
V-6, V-8, V-12, &
®
903 V-8 Cylindrical PTB
®
Cummins
Fuel Injector Adapter
V-185, V-210, V-225,
V-555, VT-255, VT-555
®
Cummins
5
6
Fuel Injector Adapter
Carrying Case
6 BT, 4.02" Bore, 5.9 L
-
-
Gauge (1)
Pressure
Release
Valve
NOTE: Some parts are listed and shown for illustration purposes only, and are not available individually as replacement parts.
SKU 93039
For technical questions, please call 1-800-444-3353.
Page 4
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS DIAGRAM IN THIS MANUAL AS A
REFERENCETOOL ONLY. NEITHERTHE MANUFACTURER NOR DISTRIBUTOR MAKES ANY REPRESENTATION
OR WARRANTY OF ANY KINDTOTHE BUYERTHAT HE OR SHE IS QUALIFIEDTO MAKE ANY REPAIRSTOTHE
PRODUCT OR THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT. IN FACT, THE
MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND PARTS
REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS AND NOT BY
THE BUYER.THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE
ORIGINAL PRODUCT OR REPLACEMENT PARTSTHERETO, OR ARISING OUT OF HIS OR HER INSTALLATION
OF REPLACEMENT PARTS THERETO.
PRODUCT OVERVIEW
The Engine Compression Test Set measures cylinder pressure on diesel-equipped
cars and trucks. The Gauge (1) features a release valve, 16” of high pressure hose, a dial
reading from 0-1,000 PSI, a 0-70 bar, and a quick coupler for convenient connection to the
Adapters (2-5).
Hose
Adapter (3)
collar
and
Coupler
(1)
ADAPTER CONNECTION/REMOVAL
1.
2.
3.
4.
Pull the collar at the end of the Coupler (1) away from the opening of the
hose and insert the end of the correct Adapter (2-5) for your application.
Let go of the collar and press the Adapter into the Coupler until the collar
moves forward.
Pull on the Adapter (2-5) to ensure that it is properly connected to the Coupler.
The Adapter is ready for use.
After use, release all pressure in the tool using the pressure release valve
(see page 4) and remove the Adapter (2-5) from the engine. Carefully clean
the Adapter and Gauge Assembly (1). Pull the collar back and remove the
Adapter. Store all parts in the provided case.
SKU 93039
For technical questions, please call 1-800-444-3353.
Page 5
TESTING PROCEDURES
Due to the variations in engine design and testing
procedure, it is beyond the scope of this manual to cover
all possible testing procedures.
ALWAYS REFER TO AND CAREFULLY ADHERE TO THE
APPROPRIATE
ENGINE
MANUFACTURER’S
INSTRUCTIONS FOR USING THIS KIT.
INSPECTION, MAINTENANCE, AND CLEANING
1.
Before each use, inspect the general condition of the Compression Tester. Check
for broken, cracked, or bent parts, loose or missing parts, and any condition that
may affect the proper operation of the product. If a problem occurs, have the problem
corrected before further use.
Do not use damaged equipment.
2.
3.
When cleaning, use a clean cloth with a mild detergent. Do not use solvents, as
damage to the Compression Tester may result. Do not immerse the Gauge (1) in
any liquid. Then, store the CompressionTester inside the case in a safe, dry location
out of reach of children.
WARNING! All maintenance, service, or repairs not listed in this manual are
only to be attempted by a qualified service technician.
SKU 93039
For technical questions, please call 1-800-444-3353.
Page 6
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