50.Remove drive gear (46). A gear puller may be necessary in removing gear, as a close fit is maintained between gear and shaft.

51.Remove drive gear key (Z).

52.Remove four socket head cap screws (AD) securing cover (49) to backplate (6A, B). Remove cover gasket (50).

53.Remove spacer (47).

3700/4700 “GHBO” and “BHB” Pumps (See Figure 7.1)

54.Remove retaining ring (3) securing ball bearing (2) in place.

55.Remove drive shaft (32) along with ball bearing (2) and retaining ring (4) from backplate (6A, B).

56.Remove ball bearing (2) from drive shaft (32).

57.Remove retaining ring (4) from drive shaft (32).

58.If lip seal (5) is damaged or worn, remove from backplate (6A, B) and discard.

59.Remove two locknuts (F) from square head bolts (G) securing seal retainer (9) to backplate (6A, B). Remove seal retainer (9).

60.When removing following type of single seals (John CraneType 21, Type 8-1, Type 9; Pac-SealType 21; SealolType 43), clean and lubricate drive shaft (32) prior to removing mechanical seal making sure that drive shaft is smooth and free from all burrs. Loosen setscrew (if present) on mechanical seal. Remove mechanical seal (11). Inspect sealing surfaces of stationary seal face and inspect rotating element. Replace as required. Remove retaining ring (12) from drive shaft (32), if applicable.

61.Visually inspect all parts. Replace all worn or damaged parts before reassembling pump. It is recommended that new gaskets (20, 22, 25, if applicable) and new lip seals (5, 39) be installed each time pump is disassembled and reassembled.

John Craneis a registered trademark of John Crane Inc.

Pac-Sealis a registered trademark of Pac-Seal Inc.

Sealolis a registered trademark of EG & G Sealol.

3.INSTRUCTIONS FOR PUMP ASSEMBLY

Refer to Section 7, PARTS LIST, (Figures 7.1 and 7.2).

Refer to Section titled “Check Ports Versus Rotation” (Figures A and B) to assure proper configuration for pump rotation, port location, and relief valve position prior to assembling pump.

1.Visually inspect all parts during assembly. Replace all worn or damaged parts. Although they may appear reusable, it is recommended that new gaskets (20, 22, 25, if applicable, 38, 48, 50) and lip seals (5, 39) be installed when pump is being reassembled.

•WARNING! Only use genuine Roper gaskets. Gasket thickness determines proper clearances. Always check quantity of gaskets removed and replace with exact quantity. Proper material must be used based on application.

2.When cleaning or lubricating, only use products that are compatible with product being pumped and elastomers within pump. DO NOT use petroleum base products with seals with EPR elastomers. Clean and lubricate parts with light oil unless EPR elastomers are used. Use a nonpetroleum base lubricant with EPR elastomers.

3.Mechanical seals are precision pieces of equipment. Use extreme care not to damage seal faces or elastomers during assembly.

4.Install two hollow dowel pins (J) on each side of case (19A, B, C, D). Place appropriate number of case gaskets (20) on faceplate side of case. Align faceplate (23A, B, C) on hollow dowel pins (J). Secure faceplate to case using two washer head cap screws (K) and eight hex head cap screws (L).

5.Place idler gear (35) into case bore. Install key (B) in keyway on idler shaft (33). Slide idler shaft into I.D. of idler gear.

9

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Roper G12-436 Instructions for Pump Assembly, 3700/4700 Ghbo and BHB Pumps See Figure, Refer to , Parts LIST, Figures 7.1
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G12-436 specifications

The Roper G12-436 is a versatile and robust washing machine designed for both residential and light commercial use, known for its reliability and efficiency. This model integrates cutting-edge technologies and user-friendly features, making laundry tasks less time-consuming and more effective.

One of the standout features of the Roper G12-436 is its impressive capacity. With a large drum size, it can handle sizable loads, accommodating bedding, towels, and various garment types with ease. This capacity not only saves time by allowing users to do fewer loads but also contributes to energy efficiency by maximizing the amount of laundry processed per wash.

The G12-436 is equipped with multiple wash cycles, providing flexibility to cater to different fabric types and levels of soil. Users can choose from cycles such as delicate, heavy-duty, and quick wash, ensuring optimal care for their garments. This adaptability makes it suitable for a variety of laundry needs, from everyday clothing to more sensitive fabrics.

Another notable aspect of the Roper G12-436 is its efficient water usage. Featuring a high-efficiency design, it utilizes advanced technology to minimize water consumption while still achieving excellent cleaning results. This is particularly advantageous for eco-conscious users looking to reduce their environmental footprint.

In terms of control, the G12-436 features an intuitive electronic control panel, allowing users to select wash settings easily. LED indicators guide users through the wash cycle, ensuring clarity and convenience throughout the process.

Moreover, the machine boasts powerful spin speeds that enhance drying efficiency. By extracting more moisture during the spin cycle, the G12-436 enables clothes to dry faster, whether air-drying or using a dryer. This feature streamlines the laundry process, making it a practical choice for busy households.

Durability is another hallmark of the Roper brand, and the G12-436 is no exception. Constructed with high-quality materials, it is built to withstand the rigors of regular use, ensuring longevity and consistent performance over time.

In summary, the Roper G12-436 is a well-rounded washing machine that combines capacity, efficiency, and ease of use. With its range of wash cycles, water-conserving technology, and robust construction, it stands out as an excellent investment for anyone looking to simplify their laundry routines without compromising on quality.
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