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HSK5912

Gator HSK5912 User manual

  • Hello! I've reviewed the Gator Fasteners Head Stud Kit instructions (HSK5912). This document provides guidance on installing the kit, which includes modification to the rocker arm pedestal and a specific torque sequence. I'm ready to answer your questions about this product and the installation process.
  • What engine is this head stud kit designed for?
    What modifications are required for installation?
    What is the initial step for installing head studs?
    What torque sequence is required for head stud nuts?
Gator Fasteners Performance Head Stud Kit
Fits: Dodge 1989-1998 5.9L Cummins Diesel • Part Number: HSK5912
Parts Included: Tools Needed:
(26) Head Studs •Socket Set
(26) Head Stud Nuts •Torque Wrench
(26) Head Stud Washers •Thread Chaser
(6) Head Bolts
(1) Assembly Lube
Please Read Instructions before starting installation. If you don’t feel condent that
you can complete this task, do not start it and seek professional help!
Note: The Head Stud Kit requires modication of the rocker arm pedestal to
accommodate a shorter rocker arm pedestal head stud included in this kit. This is to
bring the Head Stud Nut and Washer combination down to the same installed height
as the factory head bolt
• These instructions only cover the installation and torque sequence/technique of the Head Stud Kit.
q Clean and inspect the Studs, Washers, and Nuts to ensure they are free of shipping damage and obvious defects.
q Clean all threads in the block. It is recommended to use a Thread Chaser on the threads of the block to ensure
they are completely clean (sizes M12 x 1.75 & M8 x 1.25).
q Install the Head Studs into the block.. Be sure to only screw them in HAND TIGHT. Look across the tops of the
head studs to see that they all appear to be the same length. If one is taller, remove the stud, clean the threads in
the block and re-install.
q Install the head gaskets and cylinder heads; check for any misalignment.
q Install the Pushrods, MODIFIED/MILLED Rocker Arm Pedestals and Rocker Arms according to manufacture
specs while ensuring the Valve Lash Adjusters are completely backed off.
q Lubricate both faces of the Head Stud Washers with Assembly Lube and place them onto the Head Studs.
q Lubricate threads of Studs with Assembly Lube.
q Lubricate the mating face and threads of the Head Stud Nuts with Assembly Lube and install them onto the Head
Studs tightening them HAND TIGHT.
q Lubricate and install the secondary 8mm rocker arm pedestal (hold down) bolts into the cylinder head. Tighten the
bolts hand tight. Note: This step must be done before tightening the head studs to properly align the tips of the
rocker arms with the valve stems.
Gator Fasteners Performance Head Stud Kit for 5.9L 12V Cummins Instructions • August, 2021 (Page 1 of 2)
Fasteners
Gator Fasteners Performance Head Stud Kit for 5.9L 12V Cummins Instructions • August, 2021 (Page 2 of 2)
q Snug all Head Stud Nuts on the Head Studs & the 8mm Rocker Arm Bolts, then follow the torque sequence below
in a 3-step process for the Head Stud Nuts. The Rocker Arm Bolts will NOT be torqued until a later step.
1. The rst round should be to 45 ft lbs.
2. Then repeat the sequence for 90 ft lbs.
3. Followed by 125 ft lbs.
• The amount of Head Stud threads showing above the Head Stud Nut should all be about the same. If one
appears to have more thread, the stud is most likely not all the way in the head.
q Once the Head Studs Nuts are torqued, torque the 8mm Rocker Arm Bolts to 25 ft lbs.
Disclaimer and Liabilities
Seller disclaims any responsibility/ liability for improper, incorrect, or inexperienced installation of products by the purchaser or
installer resulting in damage or loss. Buyer afrms by purchase of this product that it is t for intended use and accepts all liability.
Buyer afrms products are used at buyers own risk and accepts full responsibility.
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.200 IN. DEEP
TOP OF STUD
DECK SURFACE
6.615 -
6.665 IN.
1.100 IN.
.200 IN. DEEP
TOP OF STUD
DECK SURFACE
6.615 -
6.665 IN.
1.100 IN.
A. Rocker Arm Pedestal Modication.
It will be necessary to mill a step in all six pedestals to the
specied amount. The step must be parallel (+/-.005 in.)
with the bottom of each rocker arm pedestal.
B. Rocker Arm Pedestal Head Stud
Installed Height.
If the location of the rocker arm pedestal
head studs are above the specied
installed height, it will be necessary to
tap the threads deeper in the block and/
or modify the thread counterbore to get
the top of the studs down to the specied
height. When installed properly the tops of
the rocker arm pedestal head studs should
be ush with or just slightly above the tops
of the nuts when the head is torqued to its
nal specication.
A. B.
/