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Transfer Case for 1999-2005 GM Astro and Safari Van, 27 Spline Input | RTC136G-1M | RANDYS Worldwide

Product Details

All units are put through a proprietary cleaning method, and arrive to your door looking like new. We only ship after a complete inspection, component replacement, and quality control process. Each transfer case unit is signed off once approved by a member of our rebuild team. Zumbrota products are built to the highest quality standards of precision and reliability.

Transfer Case
Fits 1999-2005 GM Astro
Fits 1999-2005 GM Safari Van
27 Spline Input
Rear Slip Output
With Shift Motor
Ext. Front Output

Technical Notes

NV136; 27 Spline Input Shaft, Slip Yoke Style Rear Output Shaft, External Spline Front Output Shaft, Electric Shift, a new shift motor is included, Tag Numbers: 12572907, 15004509, 15017739, 12572907, 12572908, 12581024, 12585259, 15017739, 15019802, 15035131, 15035136, 15048275, 15048306, 15154947, 24228434, 24231581, Hollander Numbers: 412-392, 412-469, Other Numbers: UMT135

Warranty Information

Warranty information unavailable

Compatible Make / Model

Specification

Brand	Zumbrota Drivetrain
Prop65 Warning	WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.
Keywords	05,27SPL,99,ASTRO,CASE,E,EXT.,F,GM,INP,MTR,NP136,OUTPT,OUTPUT,R,RTC,RTC136G-1,SAFARI,SHFT,SLIP,T,VAN,W/SFT
Technical Notes	NV136; 27 Spline Input Shaft, Slip Yoke Style Rear Output Shaft, External Spline Front Output Shaft, Electric Shift, a new shift motor is included, Tag Numbers: 12572907, 15004509, 15017739, 12572907, 12572908, 12581024, 12585259, 15017739, 15019802, 15035131, 15035136, 15048275, 15048306, 15154947, 24228434, 24231581, Hollander Numbers: 412-392, 412-469, Other Numbers: UMT135
UPC	883584797586
ProxyNumber	79758
Width	28.00 in
Length	32.00 in
Depth	19.00 in
Weight	75.0000 lb

FAQs

Normally the flow of power goes from the transmission to the rear wheels through the driveshaft. However, when you shift into 4WD that power has to be split between the front and rear wheels. The transfer case makes this split happen. When you shift into 4WD, gears are engaged to power a chain drive that runs from a gear driving the rear driveshaft to power another set of gears behind the front driveshaft. Once engaged, this driveshaft delivers power to the front differential and out to the front wheels.

The ID tag location varies by manufacturer.

New Venture – Round tag on the back of the unit.

Borg Warner – Tin tag located on the case half bolts.

Magna – Sticker that can be found in a few different locations on unit.

Transfer cases use a combination of Drive, Housing, and Shift Types.

Drive types:

Gear driven transfer cases use a set of gears to send power to the front and rear axle. While gear driven transfer cases are more durable, they are also louder and less practical for smaller vehicles because of their weight.

Chain driven transfer cases use a chain in place of a gear set. Though most chain driven cases only drive one axle, there are case systems designed to drive both axles with a chain. Chains are lighter and quieter, but weaker than gear sets.

Housing types:

Married transfer case housings are bolted to the transmission, often between the output shaft and the main driveshaft. Some married transfer cases share their housing with the transmission.

Independent housings are installed separately from the transmission casing and are connected to the transmission output shaft with another driveshaft.

Shift types:

Manual Shift On-the-Fly (MSOF) transfer cases are controlled with a lever on the driver’s side floor of most vehicles. These transfer cases have two automatic sealed front axle hubs or two manual front axle hub selectors. High 4WD settings can be engaged at low speeds, but low 4WD settings must be engaged when the vehicle is stationary and the transmission is in neutral.

Electronic Shift On-the-Fly (ESOF) transfer cases have a dash-mounted selector, usually a switch or set of buttons. These cases have sealed automatic locking front axle hubs and a transfer case motor. High and low 4WD is engaged in the same ways as a MSOF transfer case.