1 Answer
What is the Head Bolt Torque specs for a 25HP Kohler Pro CV7308?
Heads Secured With Screws
1. Check to make sure there are no nicks or burrs on
sealing surfaces of cylinder head or crankcase.
2. Install a new cylinder head gasket (with printing up).
3. Install cylinder head and start four new hex flange
screws.
4. Torque screws in two increments; first to 22.6 N·m
(200 in. lb.), then finally to 41.8 N·m (370 in. lb.).
Heads Secured With Mounting Studs, Nuts, and
Washers
1. Check to make sure there are no nicks or burrs on
sealing surfaces of cylinder head or crankcase.
2. If all studs were left intact, go to Step 6. If any studs
were disturbed or removed, install new studs as
described in Step 3. Do not use/reinstall any
loosened or removed studs.
3. Install new mounting stud(s) into crankcase.
a. Thread and lock 2 mounting nuts together on
smaller diameter threads.
b. Thread opposite end of stud, with preapplied
locking compound, into crankcase, until specified
height from crankcase surface is achieved. When
threading in studs, use a steady tightening motion
without interruption until proper height is
obtained. Otherwise frictional heat from engaging
threads may cause locking compound to set up
prematurely.
Studs closest to lifters must have an exposed
height of 75 mm (2 15/16 in.).
Studs furthest from lifters must have an exposed
height of 68 mm (2 3/4 in.).
c. Remove nuts and repeat procedure as required.
4. Check that dowel pins are in place and install a new
cylinder head gasket (printing up).
5. Install cylinder head. Match numbers on cylinder
heads and crankcase. Make sure head is flat on
gasket and dowel pins.
6. Lightly lubricate exposed (upper) threads of studs
with engine oil. Install a flat washer and nut onto
each mounting stud. Torque hex nuts in two stages;
first to 16.9 N·m (150 in. lb.), then finally to 33.9 N·m
(300 in. lb.).
Aug 19, 2014 |
Craftsman Garden
I need a replacement center bolt with the hole through it, it is stripped, and I need a replacement. I have it apart, ready to put the new bolt in.
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