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NUMBER: 07 EPA04 MBE 4000-6

S.M. REF.:

1.2.2

ENGINE:

MBE 4000

DATE:

November

2007

SUBJECT: CYLINDER HEAD BOLTS TIGHTENING STAGES

PUBLICATION: 6SE412

The cylinder head bolts tightening stages have been updated as listed in Table 1.

Section

Change

1.2.2

Section title has been updated.

1.2.2

The Torque Value description has been changed from in. to lb·ft.

1.2.2

The Stage 2 torque value has been changed from (37 1) to (37).

Table 1

Cylinder Head Bolts Tightening Stages

Summary of Contents for MBE 4000

Page 1: ...LICATION 6SE412 The cylinder head bolts tightening stages have been updated as listed in Table 1 Section Change 1 2 2 Section title has been updated 1 2 2 The Torque Value description has been changed from in to lb ft 1 2 2 The Stage 2 torque value has been changed from 37 1 to 37 Table 1 Cylinder Head Bolts Tightening Stages ...

Page 2: ...result 3 Using a dial caliper measure the length of the cylinder head bolts from the end of the bolt to the bottom of the flange See Figure 1 Listed in Table 2 are the acceptable lengths Replace any bolts which do not meet these specifications 1 Dial Caliper 2 End of Cylinder Head Bolt 3 Bottom of Flange Figure 1 Measuring Head Bolts Description Length mm in Shaft length when new 210 0 8 27 Maximu...

Page 3: ... 35 in Stage 6 additional 90 Table 3 Tightening Stages Cylinder Head Bolts NOTE If the stretch bolt tightening torque is exceeded remove it Check its maximum permissible shaft length replace if necessary and tighten it from Stage 1 Unconditionally replace all bolts whose shaft length exceeds the maximum permissible value 6 Replace the seal rings and connect the fuel return line to the cylinder hea...

Page 4: ...y heads were removed 11 Install the exhaust manifold and tighten the bolts to 50 N m 37 lb ft 12 Install the charge air intake manifold 13 Lubricate the pushrods with a light coating of engine oil and install the pushrods in order as removed NOTE Make sure the pushrods are correctly seated in the valve tappets 14 Install the valve bridges in order as removed 15 Install the rocker arm assembly in o...

Page 5: ... ignition switch and test the engine Observe the oil pressure gauge to verify the correct oil pressure The maximum oil pressure readings at idle speed are listed in Table 4 Pay attention to the coolant temperature gauge warning lights fluid leaks and any other signs of a problem Description Minimum Oil Pressure Reading kPa psi Engine at Idle Speed 50 7 Engine at Maximum rpm 250 36 Table 4 Oil Pres...

Page 6: ...sel EPA04 MBE 4000 Service Manual 6SE412 The next revision to this manual will include the revised information Detroit Diesel DDC and the spinning arrows design are registered trademarks of Detroit Diesel Corporation Copyright 2007 Detroit Diesel Corporation All rights reserved Printed in U S A ...

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