Q: If HB has TDC mark in wrong location, will it still work?

asked by on

I bought a new Harmonic balancer off eBay for my 99 Toyota 4Runner 3.4L. When it arrived, I placed it next to the original HB. The mark for TDC on the new HB is in a different location then the mark on the original HB. The original HB has the mark to the drivers side when placed on the crankshaft with crankshaft at TDC. The new HB has the mark on the passenger side when placed on the crankshaft with the crankshaft at TDC. As long as I have the crankshaft and both cams aligned to TDC, will the new HB still work properly even though the mark for TDC does not line up with the numbers on the timing cover?

Hello. As long at the timing marks on the crank and camshafts are aligned as they should be then the engine should work fine. The only reason why the mark on the balancers would be different would be because the new one is defective or incorrect, or the old one is worn out enough that the timing mark has moved. If you need some help making sure that the timing is good, consider using YourMechanic, as a certified mechanic can come to you to [double check the valve timing on the engine] https://www.yourmechanic.com/services/timing-belt-replacement

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. If HB has TDC mark in wrong location, will it still work?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: My coolant ran out when the vehicle sat for 2 years and I am scared to start it.

Hi there. Look in the engine compartment and locate the item that cracked to cause the coolant to leak out. If the radiator cracked, then replace the radiator, fill up the cooling system with water, and look for leaks. If...

Q: Q: Evaporative Emissions Control

Hi There, It sounds like you may have a couple of separate issues going on here. The hot humid water smell indicates you may have a leaking heater core. The [heater core]((https://www.yourmechanic.com/services/heater-is-not-working-inspection) is a small radiator like unit that circulates...

Q: Q: Charging system failure.

Based upon what you are describing, it sounds like you may have a voltage supply issue due to the amount of power being delivered to the accessories, speakers, etc. that the system is required to produce. If the voltage being...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.