ENGINE DIAGNOSTIC TEST PROCEDURES
Section 6
•
FUEL ANEROID DIAPHRAGM
400 Series On-Highway
(with Robert Bosch MW Pumps)
FROM FORM NO. CGED-365
ANEROID DIAPHRAGM
13
PRESSURE TEST DIAPHRAGM (20 PSI MAX - FOR 30 SECONDS) NO
LEAKAGE
PERMISSIBLE.
INSTRUMENT
GUIDELINE DATA‚
1st CHECK
2nd CHECK
D-100 PRESSURE KIT
(SE-2239)
p Refer to "Performance Data Guidelines", in this section.
Test for leakage as follows:
1.
Remove intake manifold to aneroid line at aneroid.
2.
Connect fitting and plastic tubing to Pressure Test Kit
(SE-2239). Use 0-30 psi gauge.
3.
Pressurize diaphragm housing to 20 psi max. for 30
seconds. (See Figure 27.)
4.
No leakage is acceptable. Record whether aneroid
leaks.
Injection
pump
must
be
removed
if
diaphragm leaks because full load stop must be set
on injection pump test bench.
Figure 27. Aneroid Diaphragm Leakage Test
For Robert Bosch MW Pump
CG ES-240-4
Printed in United States of America
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