Dover 750RNG, Service Manual

Page: 10 / 26

10
Cam Follower Installation
The instructions for replacing cam followers
assume the follower wheel and cam were not
removed. Cam followers will be installed one
at a time through the follower access hole in
the housing. If the follower wheel was
removed, proceed by repeating the first four
steps until all cam followers have been
installed in the follower wheel.
If the cam was removed but not the follower
wheel, proceed by repeating the first four
steps until all but two cam followers have
been replaced. Also see additional
instructions below.
NOTE: You will need to purchase or
manufacture a tool to keep the cam
follower square to the bore in the follower
wheel during installation and prevent
damage to both the cam follower and the
wheel.
The tool can be made from round stock.
Bore and face the stock to suit the
follower:
1.375” dia. follower: 1.376” (34.95 mm)
bore
1.500 ” dia. follower: 1.501” (38.13 mm)
bore
1. Deburr the cam follower stud before
installation.
2. Coat the follower wheel stud hole with
anti-seize lubricant. Place a cam follower
into the follower wheel hole.
3. Push the cam follower upward hard
enough to press the cam follower into the
follower wheel hole using one of the
methods described below. Make sure the
shoulder on the cam follower seats
against the follower wheel.
Insert a screw into the bottom of the
follower and slide the follower into the
tool. While holding the tool against
the face of the wheel, tap the screw
to drive the follower into the bore until
it is seated against the wheel.
Alternatively, you can use the method
from step 3.1 to insert the cam
follower approximately ¼” (6 mm) into
the follower wheel bore then use a
slide hammer from the top to pull the
follower up thru the follower bore until
it is seated against the wheel.
CAUTION
Make sure the shoulder of the cam follower is
seated against the follower wheel and make
sure the follower is installed straight and in
line with the hole. Damage to the cam
follower, follower wheel or cam could occur if
cam follower is improperly aligned during
installation.
4. Install the heavy-duty washer (Item #16)
and flat head cap screw (#20), assembled
as shown in the cross-section drawing in
this Service Manual. Use Red Perma-
Lok® ‚ and torque the socket head cap
screw to specification. The tightening
torque depends on the size of the cam
follower. See the table titled "Torque
Requirements for Tightening Screws" in
this Service Manual for tightening torque.
5. Repeat steps to install all cam followers.
6. Install new bore plug (Item #27) using a
round, flat plate larger than plug to press
in plug and seat flush to bearing.
7. Re-install the Dial Ring (Item #2) with the
socket head cap screws (Item #34).
8
RNG Series
Service Manual