94 oil pump alignment?

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Mar 29, 2009
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Rio Rancho, NM
20160403_095846.webp
What is the arrow for on here can't find anything in manual
Is there a certain way to lign up?
 
Since the pump is rotating, I don't believe you need to align the arrow with the drive rotor (rotating portion) of the pump.

This link states that the crankshaft "set key" is facing down before installing the timing chain cover, which covers the oil pump.

Toyota Workshop Manuals > Landcruiser 4WD L6-4.5L (1FZ-FE) (1993) > Engine, Cooling and Exhaust > Engine > Engine Lubrication > Oil Pump, Engine > Component Information > Service and Repair > Removal > Page 961

As you stated, there isn't any mention of the arrow alignment.
 
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Another reference regarding the oil pump is this.


Using dial indicator, check oil pump drive shaft gear thrust clearance when moving gear back and forth.

See Fig. 16 . Standard oil pump drive shaft gear thrust clearance is .0016-.0063" (.040-.160 mm) with

maximum thrust clearance of .0118" (.300 mm). Replace oil pump drive shaft gear and or/timing chain
cover if thrust clearance exceeds maximum specification.

Arrow pointing to inspection site?
 
Another reference to the crankshaft key.

http://www.trollholescruisers.com/Tech/Manuals/Chassis and Body/LX450 FSM.pdf


Installation


1. If installing crankshaft front seal in timing chain cover, use hammer, Handle (SST 09316-00011) and Seal

Installer (SST 09316-00051). Install seal until seal surface is even with timing chain cover. Apply grease

to seal lip of seal.

2. If installing pump drive shaft gear on crankshaft, rotate crankshaft until key in crankshaft is facing

downward. Install pump drive shaft gear on crankshaft. If installing oil pump drive shaft gear, apply

engine oil to splines at center of gear where shaft of oil pump drive rotor engages. Install oil pump drive

shaft gear.
 
Thanks guys that key reference is the crank that faces down and lines up gears for top dead center alignment
I couldn't find any arrow in FSM or Chilton books.
Anyway it's easy to get to if something needs changed later.
 
Bump

Reading this and going through the FSM I'm not clear, can I change out the oil pump rotar gear set without pulling the timing chain cover.
 
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