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Thread: RR P38 Idler tensioner pulley 4.6 /4.0 V8

  1. #1
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    RR P38 Idler tensioner pulley 4.6 /4.0 V8

    Finally tracked worrying knock to a shot idler tensioner pulley. Bearing was rattling around in thermoplastic casing. Not good! even Mrs H commented ... only found it by luck when I removed the pulley while replacing the inlet manifold valley gasket etc.

    Microcat ( ERR 6439) and other sources (including Gates catalogue part no. 38245) only list full assembly ...incl the tensioner arm. Local prices for assembly vary from $135 -$190...(though I note Atlantic British list same for US $75...such is price we pay downunder for living in a small market!)

    Good News is that the offending bearing is replaceable: see http://www.precisionparts.com.au/Pages/ ... ochure.pdf . Part Number is EP027.

    Was able to source the pulley locally here in Brisbane for $43 -it's in cast iron rather than thermoplastic.

    This part is also applicable to Disco V8

    Hope this helps

  2. #2
    p38arover's Avatar
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    Hoges has updated the info on the RRNET thread RangeRovers.net • View topic - Idler Tensioner Pulley as separate Part and out of that we have found that the Dayco 89054 at about US$24 is the right part. Thanks Hoges, if you hadn't started the thread, we wouldn't have looked.

    From the Australian Dayco website:

    Enter OEM or competitor part number: ERR6439

    LAND ROVER part number ERR6439: equivalent part number: 89287 (tensioner), 89054 (pulley)

    What is odd is that if you click on the numbers on the Dayco site, you get Part No. Not Found.

    Now to get an Australian price.

    Last edited by p38arover; 19th December 2011 at 02:54 PM.
    Ron B.
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    2004 L322 Range Rover Vogue 4.4 V8 Auto
    2007 Yamaha XJR1300
    Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA



    RIP Bucko - Riding on Forever

  3. #3
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    Is this the same pulley that was subject to a recall early on in the P38 days ?
    I thought it was a plastic pulley that was replaced with a metal one.
    Scott

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    p38arover's Avatar
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    No, I think that was the idler pulley. I'll check the TSBs.

    Wait, was it this:

    Campaign Number: D385
    VIN Range: [no data entered]
    Serial Range: [no data entered]
    Product Info: Vin Range Xa410483 To Ya429903.
    Defect Details: Failure Of The Power Steering Pump Pulley May Occur At Low Kilometres As A Result Of Fatigue Cracks. In The Event Of Failure The Serpentine Drive Belt Will Be Subject To Damage Resulting In Loss Of Power Steering, Electrical Charging And Vehicle Cooling
    Then there was this:

    Land Rover Discovery Series Ii, V8 Vehicles - Campaign D216
    Date: 23/06/2000
    Supplier Name: Rover Australia Pty Limited
    Dealer Contacted : No
    Product Make: [no data entered]
    Product Model: [no data entered]
    Target Number: 0
    Model Years From: [no data entered]
    Consequences: Failure of pulley will cause drive belt damage which will result in the loss of power assisted steering, electrical charging circuit, air conditioning and cooling system.
    Campaign Number: D216
    VIN Range: [no data entered]
    Serial Range: [no data entered]
    Product Info: Vehicles Built Between 27 August 1998 And 3 April 2000. Vin Range Xa200611 To Xa900000; Ya277051 To Xa907212.
    Defect Details: The Ace Air Conditioning And Power Steering Fitted To This Model Applies Additional Loading To The Idler Pulley. Failure Of Pulley Will Cause Drive Belt Damage Which Will Result In The Loss Of Power Assisted Steering, Electrical Charging Circuit Etc.
    Ron B.
    VK2OTC

    2004 L322 Range Rover Vogue 4.4 V8 Auto
    2007 Yamaha XJR1300
    Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA



    RIP Bucko - Riding on Forever

  5. #5
    p38arover's Avatar
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    I forgot to update this thread.

    In 2009 I visited the US so I ordered the pulley and had it shipped to another RRNET forum Admin, Carl aka rrtoadhall, as I was visiting him.

    When I got home, I opened the packet to find the wrong pulley - right diameter but with only 6 grooves, not 7. Not Carl's fault, mine for not realising it whilst still in the US. It looks like a Dayco 89012 which fits a lot of cars.

    Never mind, I'm going back to Seattle this year so I'll get another one shipped to Carl. $13 from Amazon.

    But first, I'll check again if it available locally as it is in the Dayco Aust catalogue.
    Ron B.
    VK2OTC

    2004 L322 Range Rover Vogue 4.4 V8 Auto
    2007 Yamaha XJR1300
    Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA



    RIP Bucko - Riding on Forever

  6. #6
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    Quote Originally Posted by Hoges View Post
    Finally tracked worrying knock to a shot idler tensioner pulley. Bearing was rattling around in thermoplastic casing. Not good! even Mrs H commented ...
    Was able to source the pulley locally here in Brisbane for $43 -it's in cast iron rather than thermoplastic.

    This part is also applicable to Disco V8
    Hope this helps
    Hey there Hoges,
    yup, I found the replacement steel/iron pulley too and I have ordered it, which seems the logical thing to me. I dont think the extra rotating mass is really significant and I want reliability.
    I want to replace the two Idler pulleys as well. Did you find a source for those here in Aust?

    Cheers
    Mick

  7. #7
    p38arover's Avatar
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    Quote Originally Posted by p38arover View Post
    Never mind, I'm going back to Seattle this year so I'll get another one shipped to Carl. $13 from Amazon.

    But first, I'll check again if it available locally as it is in the Dayco Aust catalogue.
    I bought two of them in the USA.
    Ron B.
    VK2OTC

    2004 L322 Range Rover Vogue 4.4 V8 Auto
    2007 Yamaha XJR1300
    Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA



    RIP Bucko - Riding on Forever

  8. #8
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    I have just completed changing the bearings in these 2 idlers, after the dreaded whirring set in. 6304 in the large one, and 6203 in the small one. The surfaces were OK - the cost was under $15 for the pair of bearings. Entirely serviceable repair. See a bearing supplier for the correct sealed application.

    Pete

  9. #9
    jsp's Avatar
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    they can be replaced? bugger I should have kept my old one after putting in Ron gave me!
    2002/1994/1988/1987/1984/1981/1973 Range Rover 1986 Wadham Stringer
    and a Magna............
    South Australia.

  10. #10
    p38arover's Avatar
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    Quote Originally Posted by jsp View Post
    they can be replaced? bugger I should have kept my old one after putting in Ron gave me!
    Not in the plastic idler as far as I'm aware. Was Pierre's plastic?
    Ron B.
    VK2OTC

    2004 L322 Range Rover Vogue 4.4 V8 Auto
    2007 Yamaha XJR1300
    Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA



    RIP Bucko - Riding on Forever

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