JIMS 1029-53B (Power Glide) - Manual

Instruction Sheet For #1029-53B (Power Glide)
“Power Glide™” Tappet Block Kit
Use on Pan Big Twin 1953-65
Use on Shovel Big Twin 1966-84
Please read all instructions thoroughly before starting this
job.
1. Remove tappets and tappet blocks per H.D.® Service
Manual.
2. Remove all old gasket material and keep all foreign
material out of tappet block holes. If you were using
the stock hydraulic units you can use the same
pushrods. If you were using solid tappets you need
hydraulic style pushrods, for Shovel motors use JIMS
®
No.2369 or H.D. ® No.17904-66, or equivelant - for Panhead motors use JIMS ® No.2404 or
H.D. ® No.17905-53B or equivelant.
3. Wash pushrods and pushrod covers, install new seals.
4. *Check for correct thread pitch and style of tappet screws pertaining to year of application. Tappet
blocks can be countersunk for early style screws.
5. Note: These blocks are designed to accommodate a gross valve lift of .550 at the valve, this is about
.385 at the cam. You will need at least .035 roller to block clearance with any cam being used. To
check for this do the following: With a tappet in rear block, no base gasket, one tappet at a time,
Cam lobe for the one that you are checking at the highest point of lift. Slide the assembly into the
motor (Note: if the tappet block flange does not touch the motor case during this trial assembly,
remove material as needed to give the necessary .035" of up and down tappet movement) With the
assembly still in motor snug with JIMS® tool #33443-84 to about 30 in./lb. (Note: Use JIMS® tool
#33443-84 only if your case has 1/4-20 threads.) Now check again for .035" free movement.
Do the same for the other tappets. If more clearance is needed remove the least amount of material
from the tappet blocks as needed. (Note: make sure to remove any burrs after modifying the blocks,
wash and air dry.) Also check tappet to tappet clearance on cams with small base circles.
6. Apply a light film of motor oil or sealer to both sides of gasket, install on blocks. Apply assembly lube
to tappets and rollers. Slip tappets into blocks, you can hold tappets in place with your fingers or a
rubber band works well.
7. With both blocks in place on case. Install JIMS® tool #33443-84 if your case has 1/4-20 mounting
holes. Lube tool and screw into the tappet screw hole to center block into case. Tighten to 30 in./lb.
Apply lube to the other three screws and torque to 30 in/lb. Install the other block the same way.
Remove tool and install last lubed screw and finish torquing to 120 in./lb. in a criss cross pattern at
30 in/lb. increments.
8. This is a good time to clean the tappet filter. See H.D.® Service Manual.
9. Locate the front pushrod and covers first. Apply assembly lube to top and bottom ends and threads of
Rev G
5/98
No.2274-IS
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