GP6140-4000 & GP6145-4000 Repair Instructions, Position

GP6140-4000 & GP6145-4000 REPAIR INSTRUCTIONS

To Check Valves

Loosen plugs (56) and take out complete valve (51) with a slide hammer (provided with pump). With a bent piece of wire, take out o-rings (52) located between the suction and discharge valves. To dismantle the valves, carefully tap the valve plate (51B) with a bolt until the valve seat (51A) is pushed out of the spacer pipe (51D). Check the sealing surfaces and replace all worn parts. Check the o-rings.

When reinstalling the valve, particular care must be taken so that the o-rings sit properly in their fittings in the valve casing. Tighten the plugs (56) to 160 ft.-lbs..

To Check Seals and Plunger Pipe

Loosen nuts (49A) and remove the pump head. Separate the plunger connection (36) from the crosshead assembly (25) by means of two open-end wrenches (size 22mm and 27mm). Pull seal sleeves (40) out of their fittings in the crankcase (1). Take seal case (41) out of seal sleeve (40). Examine plunger (37) and sleeves (and grooved ring (45A) in GP6140-4000 only). Check the o-rings (41A and 41C). Replace worn parts. Grease seals with Silicone before reinstalling. Replace plunger (37) and tighten to 355 in.-lbs.

IMPORTANT: Do not loosen the three plunger screws (36) before the valve casing (50) has been removed; otherwise, the tension screw (38) could hit against the spacer pipe (51D) when the pump is being turned.

For the pumps, the seal unit (43, 44, 44A) is loaded by a spring (42). Seal life can be increased if the loading allows for a little leakage. This assists lubrication and keeps the seals cool. It is therefore not necessary to replace the seals before the leakage becomes too heavy and causes output and operating pressure to drop.

When reassembling, tighten plunger (37) to 33 ft.-lbs.

Check o-rings on seal case (41). Clean surfaces of seal sleeves in gear box and sealing surfaces of valve casing. Push valve casing carefully onto o-rings of seal case and centering studs (49C). Tighten nuts (49A) to 103 ft.-lbs.

To Disassemble Gear End

Take out plunger and seal sleeves as described above. Drain oil. After removing the circlip ring (33B), pry out seal retainer (33) with a screw driver. Check seals (32 and 33A) and surfaces of crosshead. Remove crankcase cover (4). Loosen inner hexagon screws on the connecting rods (24) and push connecting rod halves as far into the crosshead guide as possible.

IMPORTANT: Connecting rods are marked for identification. Do no twist con rod halves. Con rod is to be reinstalled in the same position on shaft journals. Check surfaces of connecting rod and crankshaft (22).

Take out bearing cover to one side and push out crankshaft taking particular care that the connecting rod does not get bent.

Reassemble in reverse order: Regulate axial bearing clearance - minimum 0.1mm, maximum 0.15mm - by means of fitting disc (20A). Shaft should turn easily with little clearance. Tighten inner hexagon screws (24) to 355 in.-lbs.

IMPORTANT: Connecting rod has to be able to be slightly moved sidewise at the stroke journals.

GP6140-4000 and GP6145-4000 TORQUE SPECIFICATIONS

Position	Item#	Description	Torque Amount
24	06896	Inner Hexagon Screw	355 in.-lbs.
38	12554	Tensioning Screw	33 ft.-lbs.
49A	06958	Nut, Valve Casing	103 ft.-lbs.
56	05171	Tensioning Plug	160 ft.-lbs.

GP6140-4000 specifications

The Giant GP6140-4000 is a top-tier agricultural tractor designed for efficiency, versatility, and robust performance in various farming applications. This model is a part of Giant's extensive line of compact and powerful machinery, aimed at enhancing productivity on the field.

One of the standout features of the GP6140-4000 is its engine performance. Equipped with a high-output, fuel-efficient engine, this tractor delivers exceptional power while maintaining low emissions, adhering to stringent environmental standards. The engine is designed to provide a powerful torque curve, ensuring that it can handle tough pulling jobs and challenging terrains with ease.

The GP6140-4000 is built for versatility. Its compact dimensions make it suitable for smaller fields and tighter spaces, while still offering a significant lifting capacity. This makes it an ideal choice for various applications such as plowing, tilling, mowing, and snow removal. With a hydraulic lift system capable of handling a wide range of implements, farmers can easily switch between tasks, increasing operational efficiency.

Another notable characteristic of the GP6140-4000 is its advanced technology integration. The tractor features state-of-the-art electronic controls that enhance the operator's experience. The intuitive dashboard provides real-time data on engine performance, fuel consumption, and operational settings, allowing operators to make informed decisions on-the-fly. Additionally, the tractor is equipped with a four-wheel drive system, providing superior traction and stability on uneven or slippery surfaces.

Comfort and ease of use are also prioritized in the design of the GP6140-4000. The spacious cab is ergonomically designed with adjustable seating, climate control, and excellent visibility, ensuring that operators can work for extended periods without fatigue. The user-friendly controls allow for simple operation and quick adjustments, making it accessible for both experienced farmers and newcomers alike.

In terms of safety features, the GP6140-4000 is designed to meet industry standards, incorporating roll bar cages, safety switches, and visibility enhancements that protect the operator during challenging tasks.

In summary, the Giant GP6140-4000 is an impressive agricultural tractor that combines powerful performance, versatile capabilities, and advanced technology. Its design caters to modern farming needs, making it a valuable asset for farmers looking to enhance their productivity and efficiency in the field. Whether managing small plots or tackling heavy-duty tasks, the GP6140-4000 stands ready to deliver outstanding results.