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UNDERCARRIAGE AR 3971212 - Caterpillar


3971212 UNDERCARRIAGE AR Caterpillar parts 307E
Rating:
18
Alternative (cross code) number:
CA3971212
397-1212
3971212
Caterpillar 3971212 UNDERCARRIAGE AR

Buy UNDERCARRIAGE AR 3971212 Caterpillar genuine, new aftermarket tractor parts with delivery
MINI HYD EXCAVATOR,

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$129.00

15 Aug 2025

CN: cang nan xian n
Connecting Rod 3971212 3954658 4943979 Suitable for Cummins Engine ISBE 4BT 5.9 QSB6.7
Yuubryczny Part Name: Connecting Rod || Part Number: 3971212 3954658 4943979 || Application:Suitable for Cummins Engine ISBE 4BT 5.9 QSB6.7 || Notice:Application information provided is for reference only. Please confirm the part number and compare old parts before purchase. If you have any question,pls feel free to ask us. || Friendly tips:This product boasts excellent performance, superior quality, reliability and safety. It is your reliable choice.
$118.00

15 Aug 2025

CN: cang nan xian a
Connecting Rod 3971212 3954658 4943979 Compatible with Cummins Engine ISBE 4BT 5.9 QSB6.7
rsityhalf ????Part Name:Connecting Rod || ????Part Number:3971212 3954658 4943979 || ????Application:Engine ISBE 4BT 5.9 QSB6.7 || ????Tip: If you need any other parts, please contact us - we are a professional sales team and have many products to offer to you. Many buyers are very satisfied with our service. You can get first-class products and high-quality services from us, believe me, you will have a pleasant shopping experience here. || ????Attention: If you are unsure if the product is suitable for your machine model. In order not to delay your use of the parts, please provide your engine nameplate or serial number and part number, and we will help you confirm if it is suitable. To avoid unnecessary returns, please carefully check the product image and part number to ensure that it is the product you want. Thank you for your support and understanding!
$139.00

14 Jul 2025

CN: dongyushuang
Connecting Rod 3971212 3954658 4943979 Compatible with Cummins Engine ISBE 4BT 5.9 QSB6.7
Teaviatorial ????Part Name:Connecting Rod || ????Part Number:3971212 3954658 4943979 || ????Application:Engine ISBE 4BT 5.9 QSB6.7 || ????Tip: If you need any other parts, please contact us - we are a professional sales team and have many products to offer to you. Many buyers are very satisfied with our service. You can get first-class products and high-quality services from us, believe me, you will have a pleasant shopping experience here. || ????Attention: If you are unsure if the product is suitable for your machine model. In order not to delay your use of the parts, please provide your engine nameplate or serial number and part number, and we will help you confirm if it is suitable. To avoid unnecessary returns, please carefully check the product image and part number to ensure that it is the product you want. Thank you for your support and understanding!
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3971212 Images:
Caterpillar parts 3971212

Compatible equipment models: 3971212:

MINI HYD EXCAVATOR  307E   Caterpillar

Information:

Removal Procedure
Table 1
Required Tools    
Tool     Part Number     Part Description     Qty    
A     FT-1114     Vacuum Cap     1    
Personal injury can result from hydraulic oil pressure and hot oil.Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.
Refer to Operation and Maintenance Manual, "System Pressure Release".
Install Tooling (A) onto the hydraulic tank. Attach an air supply hose onto Tooling (A). Apply 276 to 414 kPa (40 to 60 psi). This will pull a vacuum on the hydraulic system.
Illustration 1 g01981934
Disconnect hose assembly (1) and hose assemblies (2) .
Illustration 2 g01981997
Remove bolts (3). Remove piston pump (4). Remove O-ring seal (5) .Installation Procedure
Install piston pump (4) in the reverse order of removal.

Caterpillar parts catalog:

Caterpillar parts catalog
307E Mini Hydraulic Excavator H1Y00001-UP (MACHINE) POWERED BY C2.6 Engine


Parts undercarriage Caterpillar catalog:

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