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Scottdagoalie
Scottdagoalie, Senior Master Tech.
Category: Ford
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Experience:  30 years with Ford dealers
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1994 Ranger: I have changed a timing belt..2.3L..runs great

Resolved Question:

I have changed a timing belt on a 1994 Ranger 2.3L engine. Timing is set perfect, runs great. Belt will not stay on. Tracking is off. Tensioner was replaced. I have tried many times drifferent adjustments and still will not track stright. Comes off after about 30 sec at idle
Submitted: 5 years ago.
Category: Ford
Expert:  Scottdagoalie replied 5 years ago.
HiCustomer Thank you for asking your question on JustAnswer. The other Experts and I are working on your answer. By the way, it would help us to know:
-Is the belt coming off completely or walking towards the edge of the pulleys?
Thank you again for trusting us with your problem. Please reply as soon as possible so that we can finish answering your question.
Customer: replied 5 years ago.
The belt is slowly working its way off toward the front of the pulleys. The upper inner timing cover was broken when belt came off while driving. The lower inner cover is ok. The old tensioner was a two pcs. wheel and it broke when the belt broke. The new tensioner is a solid wheel. I have used a mic. and level on all the pulleys and tensionser to check for level. I even tired to add a 3/16ths inch washer behind the tensioner to try to get it to track more even and it still didn't stay on. Truck runs great for 20 secs. I stop the truck before it jumps off so I don't have to reset the timing. Truck has 185.000 miles that I put on it and never chnaged nay major parts on the truck. Any ideas
Expert:  Scottdagoalie replied 5 years ago.
I suggest getting another tensioner with the proper pulley.The tensioner is the only component in the timing belt drive system that can cause this problem.Given that the pulley's are noticably different ,you may want to check around with different venders for the style that you need.
Customer: replied 5 years ago.
I though the same thing when I got the new tensioner. It is the exact size as old tensioner, just not two pcs? I didn't use a tensioner tool that they call for in the hanes manaul. I lossened the pivot bolt, pushed the tensioner back, tightened the pivot bolt, replaced the belt, lossened the pivot bolt and allowed the tensioner to push the belt tight. I added more presure and less presure and all seem to have the same results. I guess I will try another tensioner. Do you have to use the tensioner tool that the hanes manual calls for?
Expert:  Scottdagoalie replied 5 years ago.
Here are the directions from the Ford service manual,hope it helps.

1994 Aerostar/Ranger/Explorer

Removal

  1. Align crankshaft so number on piston is at TDC (top dead center) as indicated by timing mark.
  1. Remove outer timing belt cover as outlined in this section.

    CAUTION: If you attempt to remove timing belt or adjust tension without loosening both timing belt tensioner adjusting bolt and spring pivot bolt, you will break Camshaft Belt Tension Adjusting Tool T74P-6254-A when you attempt to relieve tension on belt.

  1. Loosen timing belt spring pivot bolt. Do not remove.
  1. Hold tensioner with Camshaft Belt Tension Adjusting Tool T74P-6254-A.
graphic
1994 Aerostar/Ranger/Explorer
  1. Item Part Number Description
    1 6256 Camshaft Sprocket
    2 T74P-6254-A Camshaft Belt Tension Adjusting Tool
    3 6268 Timing Belt
    4 6K254 Timing Belt Tensioner
    5 N800112-S2 Tensioner Adjusting Bolt (under wrench) M8-1.25 x 20. Tighten to 35-45 Nm (26-33 Ft-Lb). Refer to text.
    6 6K282 Timing Belt Tensioner (Spring Pivot) Bolt. Tighten to 40-55 Nm (30-40 Ft-Lb)
    7 Timing Mark (on Inner Timing Belt Cover)
    8 Timing Mark (on Camshaft Sprocket)
  1. While holding tensioner, loosen adjusting bolt and gradually release spring tension.
  1. Using adjusting tool, pry tensioner away from belt. While holding, tighten adjusting bolt to hold tensioner away from belt.
  1. Remove timing belt.

    Camshaft Timing Belt, 2.3L I-4

graphic

1994 Aerostar/Ranger/Explorer
  1. Item Part Number Description
    1 N600414-S Bolt M12-1.75 x 45. Tighten to 70-95 Nm (52-70 Ft-Lb)
    2 6278 Camshaft Sprocket Washer
    3 6256 Camshaft Sprocket
    4 6B260 Camshaft Timing Belt Guide
    5 6250 Camshaft
    6 6A739 Auxiliary Shaft
    7 6019 Inner Timing Belt Cover
    8 6278 Auxiliary Shaft Sprocket
    9 385208-S Washer M10
    10 N600313-S2 Bolt M10-1.5 x 40. Tighten to 40-55 Nm (30-40 Ft-Lb)
    11 6268 Timing Belt
    12 6303 Crankshaft
    13 6306 Crankshaft Sprocket
    14 6K254 Timing Belt Tensioner
    15 N800112-S2 Tensioner Adjusting Bolt M8-1.25 x 20. Tighten to 35-45 Nm (26-33 Ft-Lb). Refer to text.
    16 6K282 Timing Belt Tensioner (Spring Pivot) Bolt. Tighten to 40-55 Nm (30-40 Ft-Lb)
    17 6L273 Timing Belt Tensioner Spring
    18 6B316 Key
    19 Recess (Install Towards Cylinder Block.) (Part of 6256)

Installation

  1. Remove one spark plug from each cylinder.
  1. If not done:
    1. Loosen tensioner adjusting bolt.
    1. Using Camshaft Belt Tension Adjusting Tool T74P-6254-A, pry tensioner clockwise against spring tension as far as possible.
    1. Tighten adjusting bolt to hold tensioner in released position.
  1. Align crankshaft so number one piston is at TDC (top dead center) as indicated by timing mark.
  1. Line up camshaft sprocket timing mark with inner timing belt cover timing mark and key is pointing down.

graphic

1994 Aerostar/Ranger/Explorer
  1. Item Part Number Description
    1 6256 Camshaft Sprocket
    2 Pointer (Part of Camshaft Sprocket)
    3 Timing Mark (on Inner Timing Belt Cover)
    4 N801658-S Stud M8 x 125. Tighten to 20-30 Nm (15-22 Ft-Lb)
    5 6K282 Spring Pivot Bolt. Tighten to 40-55 Nm (30-40 Ft-Lb). See text.
    6 Stud (Part of Tensioner)
    7 6K254 Timing Belt Tensioner
    8 6256 Auxiliary Shaft Sprocket
    9 6303 Crankshaft
    10 6306 Crankshaft Sprocket
    11 N806700-S Key
    12 N800112-S2 Adjusting Bolt M8-1.25 x 20 35-45 Nm (26-33 Ft-Lb). See text.

    NOTE: On 49-State, and all automatic transmission vehicles, it is not necessary to align auxiliary shaft sprocket.

  1. If vehicle is California Emissions Certified with manual transmission:
    1. Install Synchronizer Positioner T93P-12200-A into synchronizer.
    1. Rotate auxiliary shaft sprocket until the synchronizer shutter is against the stop, and the notch of the tool engages the notch of the synchronizer bowl.
  1. Install timing belt over crankshaft sprocket . Then, proceeding counter-clockwise, over auxiliary shaft sprocket and camshaft sprocket.
  1. Loosen tensioner adjusting bolt allowing tensioner pulley to press against timing belt.
  1. Remove tool from synchronizer.

    NOTE: When performing the following step, do not rotate crankshaft counter-clockwise as timing belt may jump a cog, putting camshaft or auxiliary shaft out of time.

  1. Rotate crankshaft two revolutions clockwise.
  1. Bring crankshaft slowly, without stopping, to number one cylinder firing position (keyway directly up).
  1. Recheck timing mark alignment. Repeat steps if timing marks are no longer properly aligned.
  1. Rotate tensioner assembly against bolt with torque wrench up to 41-45 Nm (30-33 ft-lb) and tighten adjusting bolt.
  1. Tighten adjusting bolt to 35-45 Nm (26-33 ft-lb).
  1. Tighten spring pivot bolt to 40-55 Nm (30-40 ft-lb).
  1. Install the crankshaft belt guide.
  1. Install the crankshaft position sensor onto the dowel pin and tighten the two longer bolts to 8-12 Nm (6-9 ft-lb).
  1. Adjust crankshaft position sensor air gap. Refer to Section 03-07B or Section 03-07C.
  1. Install outer timing belt cover as outlined in this section.
  1. Install spark plugs .

Scottdagoalie, Senior Master Tech.
Category: Ford
Satisfied Customers: 1940
Experience: 30 years with Ford dealers
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