Alamo T 7740 All Brahmas, Port Plug Update Subject, Service Instructions, Parts Required, Raised

SERVICE BULLETIN No. 083005-1

Alamo Industrial Technical Services Department

1502 East Walnut

Seguin, Texas 78155

830-379-1480

Models:	All Machetes (except on TV140 & 9030 Tractor)			Bulletin No:		Date:
Shipped Between Mar. 1, 2005 and Aug. 19, 2005				083005-1
	All Brahmas					Aug. 30, 2005
Shipped between Mar. 1, 2005 & Aug. 19, 2005
Parts:		Labor:	Old Parts Disposition:		Termination Date:
100 % at Dealer Net		0.5 hr At dealers Register	Scrap, No Parts to Return		Nov. 30, 2005
		Shop Rate

Port Plug Update:

Subject:

On Machete and Brahma pumps utilizing the new design Servo Solenoid Valve assembly, An incor- rect port plug was installed in the port next to the solenoid Valve. This incorrect port plug does not allow oil trapped on the back side of the servo piston to escape to tank, resulting in incomplete shifting of the servo piston and thus incomplete stroke of the pump, causing a notice- able decrease in blade speed and performance. Pumps that need updating can be externally identified by the wire exit direction on the solenoid coil, a rectangular wire

Raised	Remove and
Button on
	Replace Port
Port Plug
	Plug

connection point on the solenoid coil, and a raised button on the port plug as shown in figure 1.

Once the plug is removed from the manifold, the incorrect plug can be identified by the secondary sealing surface and extended length as shown in figure 2.

Figure 1

Wires protrude horizon- tally out of a rectangular connector on solenoid coil

Service Instructions:

Secure the tractor to facilitate safe repair. Thor- oughly clean the top of the pump and around the port plug and solenoid valve to prevent contamination from be introduced to the hydraulic system. Remove the port plug as shown in figure 1 and replace with new port plug (P/N 02983170) as shown in figure 2. Run and test mower for operation and hydraulic leaks.

Parts Required:

Part No.	Qty	Description
02983177	1	Port Plug (New Style)

Incorrect old style plug with two sealing surfaces

Correct new style plug with one sealing surface

Figure 2

Warranty Compensation will be provided following proper filing of warranty claim in accordance with

the Alamo Industrial Warranty Policy. Claim allowance may vary in accordance with laws governing a specific region. Any Warranty associated with this service bulletin must be within authorized dates.

MACHETE

© 2005 Alamo Group Inc. 2-30