90' xj 4.0 Harmonic balancer

turkish_XJ · 10-09-2011, 11:32 PM

Can someone please help me clarify if replacing the harmonic balancer will effect the timing in anyway? The rubber from the balancer is pooping out of the crank pulley. I wanted to know if its a straight forward as remove and replace or do you have to worry about timing etc.... The crank pulley/timing chain has never been altered with but I'd like to replace the harmonic balancer if it can just be removed and replaced. I've attached a pic. You can see the fan does contact the rubber from the balancer but its not horrible. I have a taurus fan i was planning to use to replace the mechanical fan anyhow but need to know about the balancer.

Firehawk068 · 10-09-2011, 11:45 PM

No need to worry about engine timing.
Just unbolt the old one, and bolt on a new one.......
You might have to figure out how to keep the engine from spinning over while trying to loosen/tighten the crankshaft bolt. Some of them require quite a bit of torque.
Also, maybe think about replacing the front crank seal while you got the balancer off. They are relatively cheap.

cpnwrench · 10-10-2011, 12:37 AM

If I am not mistaken,,

most all engines have the harmonic balance "keyed" (i.e. a slot milled into the cylindrical opening which goes over the crankshaft end)

And will prevent you from installing it incorrectly.

course I been drinkin' and who knows!

Anyway, R & R my man, make sure you use the right puller to take it off...if you don't you can muck up the crankshaft end where the holddown bolt goes...

googd luck!

cpnwrench

DFlintstone · 10-10-2011, 01:44 AM

Agree/\, Agree/\, Agree/\, (and I'm on Cheddar cheese). On that 90 you might want to replace that timing cover seal while you're in there. The puller is the same as a steering wheel puller. Very cheap to rent. Do be careful not to muck up any threads. They saw you coming and hid the cam timing business where you can't mess it up. A trick you won't need, if there is a groove in the replacement pulley you can put a spacer under where the seal goes home so the seal, lip rides on a new spot. If you put it all together with the belt on first, so you can finish tightening the bolt later with the belt helping to keep it from rotating, don't forget to come back and tighten the bolt like I did once.

turkish_XJ · 10-10-2011, 04:52 PM

Quote:

Originally Posted by Firehawk068

Also, maybe think about replacing the front crank seal while you got the balancer off. They are relatively cheap.

I'm searching for the oem front crank seal but can't find it. Do you have a part number?

I searched Mopar parts and this is coming up: Front crank seal, jeep - 2.5l - 2.5L
84-91 $8.00

DFlintstone · 10-10-2011, 09:40 PM

Your local parts store might have it separately, or it would be in a "timing cover gasket set". "Timing cover seal" would be it. rockauto comes up allot.

Firehawk068 · 10-10-2011, 10:41 PM

Front Crank Seal, or (Timing Cover Seal)
Timken part number 321460 Costs $9.99 here in Denver.
Get the whole Timing Cover Gasket set
Fel-Pro part number TCS45117 also costs $9.99 here in Denver
Comes with the Timing Cover Seal, plus you'll get a couple gaskets you might use some day.

10-09-2011, 11:45 PM	#2
Firehawk068 Member 1996 Jeep Cherokee Join Date: Jul 2011 Location: Denver, Colorado Posts: 181 My Photos 1996 Cherokee Engine: 4.0 Transmission: AW4 Transfer Case: NP242 Front Axle: D30 3.55:1 Rear Axle: 8.25 3.55:1 Tires: 31x10.50/15 Treadwright GuardDogs Lift Specifications: 3.5" Rubicon Express Misc Accessories: Hella Fog Lights, Con-Ferr Roof Rack, Valley Class III rear Receiver Hitch	No need to worry about engine timing. Just unbolt the old one, and bolt on a new one....... You might have to figure out how to keep the engine from spinning over while trying to loosen/tighten the crankshaft bolt. Some of them require quite a bit of torque. Also, maybe think about replacing the front crank seal while you got the balancer off. They are relatively cheap. __________________ Alan H. Denver, CO '96 Cherokee

10-10-2011, 12:37 AM	#3
cpnwrench Seasoned Member Garage is empty, add now Join Date: Jun 2009 Location: wherever they send me Posts: 489 My Photos 1991 Cherokee Engine: 4.0 L Transmission: 5 speed Transfer Case: chrysler Front Axle: chrysler Rear Axle: think its a chrysler as well Tires: michelen Lift Specifications: none yet!	If I am not mistaken,, most all engines have the harmonic balance "keyed" (i.e. a slot milled into the cylindrical opening which goes over the crankshaft end) And will prevent you from installing it incorrectly. course I been drinkin' and who knows! Anyway, R & R my man, make sure you use the right puller to take it off...if you don't you can muck up the crankshaft end where the holddown bolt goes... googd luck! cpnwrench __________________ Me n' JoeBob was on Safari...

10-10-2011, 01:44 AM	#4
DFlintstone CF Veteran Garage is empty, add now Join Date: Aug 2011 Location: Nor-Cal Coast Posts: 5,000 My Photos 90,84 Cherokee Engine: 4.0,2.5 Transmission: 5 manual, AW4 Transfer Case: ?&231	Agree/\, Agree/\, Agree/\, (and I'm on Cheddar cheese). On that 90 you might want to replace that timing cover seal while you're in there. The puller is the same as a steering wheel puller. Very cheap to rent. Do be careful not to muck up any threads. They saw you coming and hid the cam timing business where you can't mess it up. A trick you won't need, if there is a groove in the replacement pulley you can put a spacer under where the seal goes home so the seal, lip rides on a new spot. If you put it all together with the belt on first, so you can finish tightening the bolt later with the belt helping to keep it from rotating, don't forget to come back and tighten the bolt like I did once. __________________ 87-90 Renix jeep owners. This is a link to great info on your Jeep! http://www.cherokeeforum.com/f23/tes...itings-136452/ Last edited by DFlintstone; 10-10-2011 at 01:46 AM.

10-10-2011, 09:40 PM	#6
DFlintstone CF Veteran Garage is empty, add now Join Date: Aug 2011 Location: Nor-Cal Coast Posts: 5,000 My Photos 90,84 Cherokee Engine: 4.0,2.5 Transmission: 5 manual, AW4 Transfer Case: ?&231	Your local parts store might have it separately, or it would be in a "timing cover gasket set". "Timing cover seal" would be it. rockauto comes up allot. __________________ 87-90 Renix jeep owners. This is a link to great info on your Jeep! http://www.cherokeeforum.com/f23/tes...itings-136452/

10-10-2011, 10:41 PM	#7
Firehawk068 Member 1996 Jeep Cherokee Join Date: Jul 2011 Location: Denver, Colorado Posts: 181 My Photos 1996 Cherokee Engine: 4.0 Transmission: AW4 Transfer Case: NP242 Front Axle: D30 3.55:1 Rear Axle: 8.25 3.55:1 Tires: 31x10.50/15 Treadwright GuardDogs Lift Specifications: 3.5" Rubicon Express Misc Accessories: Hella Fog Lights, Con-Ferr Roof Rack, Valley Class III rear Receiver Hitch	Front Crank Seal, or (Timing Cover Seal) Timken part number 321460 Costs $9.99 here in Denver. Get the whole Timing Cover Gasket set Fel-Pro part number TCS45117 also costs $9.99 here in Denver Comes with the Timing Cover Seal, plus you'll get a couple gaskets you might use some day. __________________ Alan H. Denver, CO '96 Cherokee

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Help... I can't get the Harmonic Balancer off.	rollz4kix	OEM Cherokee Tech	8	09-14-2011 10:20 PM
Harmonic balancer	dakine85	OEM Cherokee Tech	5	09-11-2011 07:11 AM
Harmonic balancer	camie31	Grand Cherokee Tech	15	08-24-2011 03:03 PM
Harmonic balancer	89 XJ	OEM Cherokee Tech	4	04-30-2011 11:23 PM
harmonic balancer	evan98xj	OEM Cherokee Tech	0	03-01-2011 12:12 PM