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Chevrolet 12537202 Chain Assembly, Timing

1982-1985 Chevrolet

Customer Questions & Expert Answers (3)
GM 12537202 Chain Assembly, Timing
  • Part Description
    CHAIN, Engine Timing
  • Manufacturer
    General Motors
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  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine Chevrolet
    Manufacturer Part Number12537202
    Part DescriptionCHAIN, Engine Timing
    Other NamesTiming Chain
    Item Dimensions4.0 x 4.0 x 1.1 inches
    Item Weight1.30 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerGeneral Motors
    SKU12537202
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California’s Proposition 65
  • Vehicle Fitment

    Year Make Model Engine Important vehicle option details
    1982-1985 Chevrolet Caprice6 Cyl 3.8L4 DOOR, CLASSIC 2 DOOR, CLASSIC 4 DOOR, CLASSIC STATION WAGON, STATION WAGON
    1982-1985 Chevrolet El Camino6 Cyl 3.8LCLASSIC 4 DOOR, CLASSIC STATION WAGON, EL CAMINO, MONTE CARLO
    1982-1985 Chevrolet Impala6 Cyl 3.8L4 DOOR, CLASSIC 2 DOOR, CLASSIC 4 DOOR, CLASSIC STATION WAGON, STATION WAGON
    1982-1983 Chevrolet Malibu6 Cyl 3.8LCLASSIC 4 DOOR, CLASSIC STATION WAGON, EL CAMINO, MONTE CARLO
    1982-1985 Chevrolet Monte Carlo6 Cyl 3.8LCLASSIC 4 DOOR, CLASSIC STATION WAGON, EL CAMINO, MONTE CARLO
  • Customer Questions & Expert Answers

    Q:
    I am wonder if this is complete and correct part for my vehicle. Posted by GMPartsGiant Specialist
    A:
    You can Select Your Vehicle to check if 12537202 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    How to replace the timing chain? Posted by Customer
    A:
    A chain tensioner should be removed first and also the camshaft gear. The method for replacing a timing chain on a Chevrolet V8 engine, such as the 305 or 350, is to remove the front cover of the crank case housing. Turn the motor until the timing marks on both sprockets are close together and in line between the centerlines of the shafts. The three bolts holding this sprocket to the camshaft can be removed because it is just pressed on lightly and also aligned with a dowel pin. Along with that, remove them from each other. Consequently, removing this sprocket will loosen up the entire camshaft assembly including its timing chain. It is necessary to use a gear puller to take out a crankshaft sprocket then. However, do not touch any part of your engine as you install new crank sprocket on shaft and put chain over camshaft sprocket too. As a result, putting these marks right between shaft centers and inserting dowel hole in cam sprocket, ensure alignment of timing marks at end of camshaft sprocket while re-fitting it by using those three aforementioned bolts for fastening purposes. Thereafter, fit it onto camshaft with chain intact by using those three screws/bolts for tightening purposes only (APOLLO 2007). After installing the sprockets, turn through two full revolutions to ensure correct alignment between timing marks on sprockets located centrally between shaft centers (APOLLO 2007). In addition to that, Oldsmobile engines have their own versions like 307; 350; 403 where you should start off by removing rear timing case cover before detaching can shaft gear itself from there on out (APOLLO 2007). Remember that this gear has its fuel pump operating clog stuck at its face which will help locate it into that camshaft using this dowel sleeve too (APOLLO 2007). Then, take out the oil slinger as well as the timing chain and the camshaft sprocket (APOLLO 2007). In case of need replacing crank shaft sprocket, it should be carefully pulled out from the shaft; first, however, it is essential to remove crankshaft key by means of a puller. Nevertheless, when removing it make sure that one does not overlap the end part of key during its removal since this keyway is machined partially into the crank gear (APOLLO 2007). Reinstalling the crankshaft sprocket requires aligning its keyway in relation to gears on engine shafts or flywheel and starter teeth. Turn the timing mark on the crankshaft gear so that it points at center of camshaft (APOLLO 2007). Put timing gear over camshaft gear and start camshaft gear onto its shaft with timing marks as close to each other as possible and aligned between centers of both shafts respectively (APOLLO 2007). Align new priced camshaft with outer end key way so you can even install fuel pump eccentric with flat edge facing towards rear part also put in oil flinger which will be finally driven until it bottoms (APOLLO 2007). On Oldsmobile Diesel Engines 263, replacing a chain and gears makes it necessary to retime engine injection pump. The valve covers must be removed off with front timing chain cover before that rockers' arm pivot bolts can be equally loosened for lash purposes except if such related activities are being performed on them. Remove bolt washer for cam sprocket and oil slinger from crankshaft. Timing chain should be removed together with sprockets for both cams along with cranks ones too. When removing this tight-fitting crank sprocket from its position on a crankshaft, you will need to use a suitable puller (APOLLO 2007). Next, position the crankshaft sprocket such that the keyway is lined up straight and rotate it through this timing mark of gear on crankshaft until it points at center for camshaft (APOLLO 2007). Position one timing gear over other so that in between shafts they have marks as close as possible (APOLLO 2007). The camshaft should be rotated to enable proper alignment with the new gear (APOLLO 2007). Place eccentric on top of fuel pump facing rear after which hammer key in until completely bottomed out; later push oil slinger into place. Therefore, the remaining steps of installation are carried out other way around and then, do not forget to deplete valve lifters while checking for injection timing once everything gets set accordingly (APOLLO 2007).
    Posted by GMPartsGiant Specialist
    Q:
    What steps are involved in replacing the timing chain and gears on the 1977 Buick Regal? Posted by Customer
    A:
    When replacing the timing chain and gears on Oldsmobile 263 Diesel Engines, follow these steps:Remove the front timing chain cover and valve covers.Evenly loosen all rocker arm pivot bolts to create lash between the rocker arms and valves.Remove the crankshaft oil slinger and the camshaft sprocket bolt washer.Remove the timing chain, camshaft, and crankshaft sprockets.If the crankshaft sprocket is tightly fitted on the crankshaft, use an appropriate puller to remove it.To install, reposition the crankshaft sprocket, ensuring the keyway is perfectly aligned.Rotate the crankshaft gear's timing mark to face the center of the camshaft.Mount the timing gear over the camshaft gear and ensure the timing marks align closely between the shaft centers.Rotate the camshaft to align it with the new gear.Install the fuel pump eccentric with the flat side towards the rear.Drive the key in until it bottoms and reinstall the oil slinger.Complete the remaining installation steps in reverse order.Bleed down the valve lifters and check injection timing after completing the process.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Timing Chain
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Genuine GM Part 12537202, the Right Choice

To ensure reliability, purchase GM part # 12537202 Chain Assembly, Timing. It is sometimes referred to as Chevrolet Timing Chain. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific Chevrolet Caprice, Impala, Malibu models.

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