Detroit Diesel 4000 Series, Service Manual, Page: 636 / 2706

SERIES 4000 12/16V SERVICE MANUAL
C 041.05.10 – ASSEMBLY OF CYLINDER HEAD
Perform the following subsections to assemble the cylinder head:
Installing Bridge Pin
To avoid personal injury when using liquid nitrogen, wear
protective clothing, gloves and closed shoes. Do not allow
the liquid nitrogen to come into contact with exposed body
parts. Danger of freezing body parts and suffocation will
occur.
To avoid injury, wear protective clothing and eye protection.
Perform the following operations to assemble the bridge pin:
1. Place bridge pins into dry ice or liquid nitrogen to freeze parts.
NOTICE
Ensure to install bridge pins to specification. Improperly seated
pins will cause cylinder head damage.
2. Place pin into cylinder head bore and install using pin driving tool.
NOTE:
Walking the pin may be required along with a couple of hits. Count the number of hits.
Replace pin(s) requiring excessive hits and remeasure bore. Tolerance is 13.984 –
14.00 mm (0.550 – 0.551).
Installing Valve Guides
Perform the following steps to install valve guides:
NOTE:
The water for pressure testing must be treated with anti-corrosive agent.
All information subject to change without notice.
C -490
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