GrimmSpeed Subaru Lightweight Crank Pulley User Manual
GrimmSpeed Subaru Crank Pulley
Installation Instructions
Manual 300024 RevA
All GrimmSpeed products are intended for Off-Road use only.
Installation
1. Remove air intake duct with a flat blade screwdriver.
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2. Using a 10mm wrench, remove the accessory belt guard. Once the bolt and nut is
removed, you can unsnap it. Gently unsnap the 2 snap locations independently and do not
pry from just one side. If not careful, it can crack.
3. Using a 12mm socket, loosen the alternator tension lock bolt.
4. Then loosen the tensioning rod with a 12mm socket.
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5. You will then need to loosen the right alternator tension bolt with a 12mm socket.
6. Press down on the alternator to relieve the belt tension and remove the belt.
7. Removal of A/C belt for pre-2008 models. 2008+ owners please skip to install step 9.
Loosen the A/C idler tension lock nut using a 12mm wrench.
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8. Loosen the tensioning rod with a 12mm socket and remove the belt.
9. Removal of A/C belt for 2008+ models. Pre-2008 owners please skip to install step 14.
Because your car does not have a belt tension idler for the A/C compressor, you will need to
rotate the engine and feed the belt off of the A/C compressor pulley. Set the parking brake
on your car and place the car in neutral. Using a 22mm socket and 1/2" drive ratchet rotate
the engine in a clockwise direction.
10. While you are rotating the engine by hand, pull on the belt with light tension 2-3" before
it contacts the A/C compressor pulley. You will need to rotate the engine 1-2 full revolutions
before the belt is fed off.
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11. You will now be removing your OEM crank pulley. If your crank pulley looks like this, you
will install the 4 larger pins into the GrimmSpeed crank pulley removal tool using a 10mm hex
wrench.
12. If your OEM pulley looks like this, you will install the 4 smaller pins into the GrimmSpeed
crank pulley removal tool using an 11mm wrench.
13. Insert a 1/2" drive ratchet or breaker bar into the GrimmSpeed crank pulley removal tool
and insert the tool into your OEM crank pulley.
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