John Deere – 1023E, 1025R and 1026R – Disassemble and Inspect Hydraulic Pump

โ†’NOTE:
Repair parts are not available separately for the hydraulic pump. If any wear or damage is found during inspection, replace hydraulic pump.

[1] – Remove pump from transmission. (See Remove and Install Hydraulic Pump in this Group.)

[2] – Mark front and rear covers as well as pump body, to aid in reassembly

[3] – Remove four remaining cap screws (A) securing pump cover to pump body.

[4] –
โ†’NOTE:
O-rings may stay in housing or stick to covers.

[5] – Remove formed O-ring (C).

[6] – Remove front cover (D) and formed O-ring (E).

[7] – If O-ring (F) is still in housing, remove O-ring. Remove seals (G) from bushing assembly.

[8] – Remove bushing assembly (H).

[9] – Remove pump drive gear (I) and idler gear (J).

[10] – Inspect gear faces for wear.

[11] – Inspect drive gear shaft splines (K).

[12] – Inspect idler gear and drive gear shaft bearing surfaces.

[13] – Inspect all bushings (L) in both bushing assemblies.

[14] – Inspect pump body internal surfaces (M) for scoring or excessive scratching.

[15] – Inspect seal (N) for wear.

[16] – If any parts are worn or damaged, replace hydraulic pump.