MANIFOLD 5N8921 - Caterpillar

Well PumpWSP255 (S/N: FNK1-UP)Introduction
This instruction pertains to the identification of Cat® Well Stimulation Pump drivetrain components to determine compatibility.Do not perform any procedure in this Special Instruction until you have read the information and you understand the information.Safety Section
Do not operate or work on this product unless you have read and understood the instruction and warnings in the relevant Operation and Maintenance Manuals and relevant service literature. Failure to follow the instructions or heed the warnings could result in injury or death. Proper care is your responsibility.
Failure to follow all safety guidelines prescribed in this document and by governing authorities and regulatory agencies may result in severe injury or death of personnel or machine damage.
Personal injury or death can result from improper maintenance procedures. To avoid injury or death, follow the procedures exactly as stated below.
Compatibility Chart
Note: Pinion shafts and bull gears can ONLY be used as a pair if the pinion shafts and bull gears are determined compatible as listed in Table 1.Note: Durability and performance CANNOT be guaranteed if the drivetrain installed is determined incompatible in this document.
Table 1
Drivetrain Parts Drivetrain A Drivetrain B Drivetrain C
Gear Group 538-9079 488-4049 551-4085
Left-hand Bull Gear 519-3254 434-9916 551-3196
Right-hand Bull Gear 519-3253 434-9915 551-3195
Pinion Shaft 519-3258 434-9917 551-3197 Drivetrain Groups
Drivetrain A
Illustration 1 g06302511
519-3254 Bull Gear (Left-hand)
The bull gears have large lightening holes and hub machining scallops.
Illustration 2 g06302516
Serial number prefix is LG
Illustration 3 g06302521
519-3258 Pinion Shaft
The pinion shaft has a fully machined appearance.
Illustration 4 g06302522
Serial number prefix is LG
Drivetrain B
Illustration 5 g06302526
434-9915 Bull Gear (Right-hand)
The bull gears have small lightening holes.
Illustration 6 g06302528