Cloyes Hex-A-Just 9-3121A (Ford 351C, M, 400) User Manual download pdf

Installation Instructions

9-3121A Hex-A-Just

Roller Timing Set

with Adjustable Fuel Pump Eccentric

BEFORE YOU BEGIN: READ ALL OF THESE INSTRUCTIONS FIRST !!!

Note: The installation procedures which follow assume that the engine has been disassembled

and cleaned as it would be for a normal timing set change.

YOU WILL NEED:

TOOLS:

Torque Wrench

Degree Wheel (Optional, but Recommended)

SUPPLIES:

Assembly Lube or Camshaft Lube

Thread Locking Compound (LockTite® #271 or equiv.)

1. Prepare the Engine. Loosen all rocker arms so that the camshaft can rotate freely.

2. Clean everything! Make sure that the engine mounting surfaces and timing set

components are as clean as possible. The life of the chain and sprockets depends on it.

3. Install the Dowel Pin. If your engine originally used the two-piece fuel pump eccentric

and the short dowel pin, remove the old dowel pin. Press the new dowel pin into place,

making sure that it is fully seated in the camshaft.

Note! Some older engines have a spacer on the camshaft and a camshaft sprocket which

is flat on the back. If your engine has one of these spacers, remove and discard it. The

new camshaft sprocket has the spacer machined in.

4. Align the Engine. Rotate the crankshaft until the number one piston is at top dead

center. The crankshaft key should be pointing straight up. Rotate the camshaft until the

dowel pin is pointing straight down.

5. Assemble the Timing Set. Select the appropriate keyway and timing mark on the

crankshaft sprocket for the camshaft timing baseline desired. We recommend the

Standard Timing position, which uses the round timing mark and round keyway. Loop the

chain over the camshaft sprocket. Align the camshaft and crankshaft timing marks and

loop the chain around the crankshaft sprocket. Lift the sprocket and chain assembly into

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Cloyes Hex-A-Just 9-3121A (Ford 351C, M, 400) User Manual