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 Post subject: more subaru timing belt reference
PostPosted: Fri Dec 04, 2009 6:41 pm 
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This is an archive of an excellent article at: http://www.ultimatesubaru.org/forum/sho ... hp?t=50768

by MilesFox

The Timing Belts can be Visually inspected and Adjusted by removing the outer belt covers and the tensioner access plugs.

To remove the outer belt covers, use a 10mm ¼” drive socket and remove the 3 bolts from both the left and right covers. The bolts thread into a brass fitting molded into the plastic. Be careful not to apply too much torque as it can crack the plastic. If indeed the brass fitting is spinning in the plastic, the timing cover can still be pulled away with gentle persuasion with a screwdriver. Wit the outer covers removed, you can check for the physical condition of the belt. Be aware of oil on the belts, as that may warrant an engine seal replacement. Oily belts will also be wakened. Check for cracks and frays on the belt, and that the teeth do not appear to have a definite seam where the teeth attach to the belt. Determine from the condition of the belts and the mileage at which they were last serviced to consider replacement.

If the belts check out ok, they can be adjusted. On the front of the center belt cover there are 2 access plugs for the tensioner pulleys, one for each side. Remove the plugs by hand or with a small screwdriver. I find it easiest to do the adjustment from under the car. It may be necessary to remove the skidplate on 4wd models. Use a 12mm 3/8” drive socket and extension. Loosen both bolts a few turns on each tensioner. (DO NOT TAKE THEM OUT) With the bolts loose, the spring-loaded tensioner will take up any slack on the belt. It will also help to torque the cam pulley with a spanner wrench or other device. You can take a screwdriver and stick it on one of the holes on the cam sprocket, and use a hammer to gently “tap” the pulley on the left to the left, and the pulley on the right to the left also, to help take any slack out of the crankshaft drive side of the belt.

Now get back under the car and tighten up the tensioner bolts, and re-install the lugs and outer covers.

Inner Timing Belt Cover Removal

You will have to remove the timing belt covers to service timing belts, engine seals, oil and water pump.

Remove all the belts to the engine ancillaries. Some AC equipped models you will have to remove the compressor and bracket as a unit, as part of it comes in front of the belt covers.

First off, loosen the 22mm (7/8) crank pulley. You can put the car in gear on Manual Transmission models. But for all models, you can brace a breaker bar against the DRIVER side of the car(USA), and bump the starter to break the torque loose. A prybar can also be stuck into the flexplate through the timing window to loosen or tighten the crank pulley bolt.

Remove the dipstick and its tube with a 12mm wrench. Disconnect the Oil Pressure sending unit wire that comes down in front of the cover. Remove the outer belt cover as described above. Now with the crank pulley off, remove all the 10mm bolts from the inner cover. The bolts along the bottom will have 10mm nuts behind them. If you need to remove the plastic behind the timing belts, the cam sprockets and idler pulley must be removed.

Timing Belt Removal and Installation

Now that we have the Timing Belt Covers off, we can service or replace the timing belts. Re-install the crank pulley and bolt. Turn the bolt clockwise so that you line up the tree belt timing marks on the flywheel with the notch on the bell housing. They will be 3 lines in a row; they are separate marks than for the ignition timing (0 deg).

Attachment:
cranktiming.jpg
cranktiming.jpg [ 46.3 KiB | Viewed 8611 times ]


With the belt marks on the flywheel lined up, turn the driver side cam sprocket so that the dot on the sprocket is pointing UP with the notch on the inner plastic. Now install the driver side belt (in the case of a broken belt, the passenger side belt has to be removed to install the driver side belt).

Adjust the tension in the same manner described in Timing Belt Check and Adjustment. Now turn the crank bolt 360 degrees, one full rotation, so that the driver side cam sprocket makes a 180 deg rotation so it is pointing DOWN.

Now turn the passenger side cam so that its dot faces UP with the notch on the inner plastic. Install the passenger side belt and adjust the tension.

Next turn the crank another full 360 deg rotation so that the passenger cam is pointing down, and the DRIVER side cam is pointing UP. With the driver side cam pointing up, the 3 timing belt marks will be in line. So with the 3 marks in line, turn the crank clockwise until the 0deg BTDC mark comes up. Use this mark to install the Distributor if it has been taken out.

With all the marks verified as lined up, put all the covers back together, job is complete!

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 Post subject: Re: more subaru timing belt reference
PostPosted: Fri Dec 04, 2009 6:53 pm 
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Pull the flywheel access cover. Rotate the engine. You'll have the main timing marks, and then you'll also have 3 scribed lines closely together. Line the flywheel up with the center line at the mark.

One cam mark should be pointing straight up.
The other should be pointing straight down.

If you rotate the flywheel 360 degrees, they will swap spots (up points down, down points up).

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 Post subject: Re: more subaru timing belt reference
PostPosted: Fri Dec 04, 2009 7:05 pm 
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Replacing the tensioner is a very good idea. The old one probably isn't performing at 100%, and then you don't have to do any weird compression procedures...

You konw how to take the crank pulley off, so that's no problem. The only thing you will need to get beforehand is a steering wheel puller to get the crank sprocket off. As far as I'm concerned, that's the only reasonable way to get it off... I was able to remove the seals with a flathead screwdriver, but I was careful not to nick any seating surfaces...

Leaving the water pump alone will save you boocoos of time, but you might hafta remove the radiator to take the sprockets off...

And as for removing cam sprockets, I have heard to loosen the nuts while the timing belt is still on and tight... Same with putting them on, just put the belt on and tighten it and then you can put the nust back on...

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 Post subject: Re: more subaru timing belt reference
PostPosted: Fri Dec 04, 2009 7:35 pm 
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download the manual:

http://www.main.experiencetherave.com/s ... and_Elect/

Code:
1992 FSM (Engine & Electrical)

*  Table of Contents
*  1-1 Specifications
*  2 Engine Section Index
*  2-1 Emission Control System and Vacuum Fitting
*      System Application
*      Schematic Drawing
*      General Precautions
*      Crankcase Emission Control System
*      Ignition Control System
*      Evaporative Emission Control System
*      Vacuum Fitting
*  2-2 On-Car Services
*      Foreword
*      Engine Compression
*      Intake Manifold Vacuum
*      Hydraulic Lash Adjuster
*      Fuel Injector
*      Oxygen (O2) Sensor
*  2-3 Engine
*      Mechanism and Function
*            General
*            Timing Belt
*            Belt Tension Adjuster
*            Belt Cover
*            Valve Rocker ASSY
*            Hydraulic Lash Adjuster
*            Cam Shaft
*            Cylinder Head
*            Cylinder Block
*            Crankshaft
*            Piston
*      Specifications and Service Data
*            Specifications
*            Service Data
*      Component Parts
*            Timing Belt
*            Cylinder Head and Camshaft
*            Cylinder Head and Valve ASSY
*            Cylinder Block
*            Crankshaft and Piston
*      Service Procedure
*            General Precautions
*            Timing Belt
*            Valve Rocker ASSY
*            Camshaft
*            Cylinder Head
*            Cylinder Block
*      Troubleshooting
*            Engine Trouble in General
*            Engine Noise
*  2-4 Engine Lubrication System
*      Mechanism and Function
*            General
*            Lubrication Lines
*            Oil Pump
*            Oil Filter
*            Oil Pan & Oil Strainer
*            Oil Pressure Switch
*      Specifications and Service Data
*      Component Parts
*            Oil Pump
*      Service Procedure
*            Oil Pump
*      Troubleshooting
*  2-5 Engine Cooling System
*      Mechanism and Function
*            General
*            Cooling Lines
*            Water Pump
*            Mechanical Seal
*            Thermostat
*            Coolant Filler Tank
*      Specifications and Service Data
*            Specifications
*            Service Data
*      Component Parts
*            Water Pump
*            Radiator and Radiator Fan
*            Water Pipe
*      Service Procedure
*            Water Pump
*            Thermostat
*            Radiator
*            Radiator Cap (Filler Tank Cap on Turbo Model)
*            Radiator Fan and Fan Motor
*            Coolant Filler Tank
*      Troubleshooting
*  2-7 Fuel Injection System
*      Mechanism and Function
*            General
*            Air Line
*            Fuel Line
*            Sensor and Switch
*            Control System
*            Self-diagnosis System
*            Turbocharger System
*      Component Parts
*            Intake Manifold
*            Air Intake Duct and Throttle Body
*            Air Cleaner
*            Turbocharger Unit
*      Service Procedure
*            Turbocharger System
*      Troubleshooting
*            Supplemental Restraint System “Airbag”
*            Precautions
*            Pre-inspection
*            Troubleshooting Chart for Self-diagnosis System
*            Output Modes of Select Monitor
*            Control Unit I/O Signal
*            Troubleshooting for Engine Starting Failure
*            Troubleshooting Chart with Trouble Code
*            Troubleshooting Chart with Select Monitor
*            General Troubleshooting Table
*  2-8 Fuel System
*      Mechanism and Function
*            Fuel Lines
*      Specifications and Service Data
*  6-1 Engine Electrical System
*      Specifications and Service Data
*      Component Parts
*            Starter
*            Alternator
*      Service Procedure
*            Starter
*            Alternator
*            Spark Plug
*            Ignition Coil
*            Spark Plug Cord
*      Troubleshooting
*            Starter
*            Alternator
*  6-2 Body Electrical System
*      Engine Electrical (MPFI)
*      Radiator Fan
*      Lighting
*      Cruise Control
*  6-3 Wiring Diagram and Troubleshooting
*      General Description
*      Working Precautions
*      How to Use Wiring Diagram
*      How to Use Super Multiple  Junctions (S.M.J.)
*      Wiring Diagram and Troubleshooting
*            Power Supply Routing
*            Charging
*            Starting
*            Engine Electrical
*            Radiator Fan
*            Lighting (Headlight)
*            Lighting (Tail, Illumination, etc.)
*            Room Light and Door Switch
*            Stop Light
*            Turn Signal and Hazard
*            Trunk Room Light
*            Back-up Light
*            A/T Control
*            A/T Shift Lock
*      Electrical Unit Location
*  Compressor Map – IHI BRL4016 (EJ22 Turbo)



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 Post subject: Re: more subaru timing belt reference
PostPosted: Fri Dec 04, 2009 7:45 pm 
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Joined: Sun Nov 08, 2009 7:03 pm
Posts: 1558
Location: Colorado
another factory service manual

http://www.driftquebec.com/legacy/1992_legacy.pdf

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