Detroit Diesel 4000 Series, Service Manual, Page: 502 / 2706

SERIES 4000 12/16V SERVICE MANUAL
15. Fill SKF hydraulic pump oil reservoir and install onto pump. Open pump bleeder valve
and bleed. Close valve and bleed and tighten pump line.
16. Operate pump to obtain half of maximum expansion pressure. See Figure 263.
NOTE:
Expansion pressure specification is stamped on hub.
17. Maintain pressure for five minutes. Increase expansion pressure in 0.1 X Maximum
Pressure holding for 2 minutes in between each increase until drive flange is free from
the crankshaft.
18. Operate hand pump (2) for hydraulic press, and seat press against drive flange by applying
minimum pressure (start of pressure increase).
NOTE:
The hydraulic press acts as a buffer, stopping the hub as it slips off its taper seat.
19. Operate hydraulic hand pump (1) for expanding the driver flange taper until expansion
pressure is half the permitted maximum. See Figure 263.
1. Hydraulic Hand Pump 1 2. Hydraulic Hand Pump 2
Figure 263 Operating Hydraulic Press and Hand Pump for Removal
20. Maintain this pressure for approximately 5 minutes.
NOTE:
Maximum expansion pressure (p
max
) is stamped on drive hub.
All information subject to change without notice.
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