Parker 252 Series, Owner'S Manual

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Bulletin HY25-1806-M1/US
Owner’s Manual
252 Series
Parker Hannifin Corporation
Chelsea Products Division
Olive Branch, MS 38654 USA
9
PTO Installation
GM 3600 Chassis
1. Before installing the PTO to the transmission, you may need to remove the two exhaust pipes that
are on the right passenger side of the vehicle and next to the Power Take-Off opening (
Fig. 1).
View is an Extended Cab with L18 engine exhaust.
2. Disconnect the connection for the oxygen
sensor or remove the oxygen sensor from the
exhaust pipe ( Fig. 2). Next remove the three
(3) bolts that secure the exhaust pipe to the
exhaust pipe header (A) in ( Fig. 1) (Fig. 3).
This should be done for the left and right exhaust
pipes. Remove the attaching bolts for each exhaust
pipe at the rear attaching flange (B) in (
Fig. 1).
3. Remove the lower transmission heat shield [1] and
PTO aperture plate [2] from the transmission
( Figs. 4 & 5).
NOTE: Make sure aperture surface is clean and dry
before proceeding.
Fig. 3
Fig. 2
Fig. 4
Fig. 5
A
B
Fig. 1
Connector
Sensor
2
1
Allison Installation