6.A.) For 3600/4600 “GHBO,” “GHB,” and “BHB” pumps with shaft packing, follow steps 7 – 18.

B.) For 3700/4700 “GHBO,” “GHB,” and “BHB” pumps with a standard mechanical seal, follow steps 28 – 38.

C.) For 3700/4700 “GHBO,” “GHB,” and “BHB” pumps with a positive drive mechanical seal, follow steps 39 – 53.

3600/4600 “GHBO” and “BHB” Pumps (See Figure 7.1)

7.Place drive gear (34) into case bore. Install key (B) in keyway of drive shaft (32). Slide drive shaft into bore of drive gear.

8.Place appropriate number of case gaskets (20) on backplate side of case (19A, B, C, D). Align backplate (6A, B) on dowel pins (J). Secure backplate to case using two washer head cap screws (K) and eight hex head cap screws (L).

9.Install packing washer (18) over drive shaft (32) into packing bore of backplate.

10.Install packing rings (16) and lantern ring (17), if used, in packing bore of backplate. Stagger joints on each ring 180° apart. Seat each ring before adding next ring. Rings must not be tamped or seated too tightly.

11.Check drive shaft (32) for free movement after each ring is installed.

12.When packing box is sufficiently full to allow entry of packing gland (14) about ¼ of an inch [6 mm], reassemble packing gland.

13.Place one square head bolt (G) through each slot in backplate (6A, B) and through each hole in packing gland

(14). Install packing gland (14) into packing box about ¼ of an inch [6 mm]. Slide packing gland clip (13) over square head bolts (G). Using two locknuts (F), secure packing gland (14) in place. Install spring clip (15) across square head bolts (G). Draw locknuts up evenly on packing to assure proper seating of packing (16), then loosen locknuts about ½ turn. DO NOT cock packing gland. This could cause binding or heating of drive shaft.

14.Install lip seal (5) in backplate (6A, B).

15.Install retaining ring (4) on drive shaft (32).

16.Install ball bearing (2) on drive shaft (32) and into backplate (6A, B) using retaining ring (3) to secure ball bearing

(2)in place as shown in sectional drawing Figure 7.1. The fit between the drive shaft and ball bearing may be a light press fit.

17.Install spacer (47).

18.A.) For 3600/4600 “GHB” gear reduction unit, follow steps 39 – 47.

B.) For 3600/4600 “BHB” hydraulic drive assembly, go to Section 5, INSTRUCTIONS FOR ASSEMBLY OF A TYPE “BHB” HYDRAULIC DRIVE, in the following pages.

3600/4600 “GHB” Gear Reduction Unit (See Figures 7.1 and 7.2)

19.Install cover gasket (50) and cover (49) on backplate (6A, B) using four socket head cap screws (AD).

20.Install key (Z) in keyway of drive shaft (32). Place drive gear (46) on drive shaft (32). Secure in place using retaining ring (45).

21.Install needle bearing (43). The needle bearing is a press fit bore.

22.Install gear case (44) and gear case gasket (48) using six hex head cap screws (W), twelve flat washers (X), and six lockwashers (Y).

23.Press ball bearing (41) onto pinion shaft (42) and install retaining ring (40).

24.Install pinion shaft assembly by sliding small end of pinion shaft into needle bearing (43) at same time gears are meshed together.

25.Slide bearing retainer (37) assembled with lip seal (39) and bearing retainer gasket (38) into place. Secure bearing retainer (37) to gear case (44) using four hex head cap screws (U) and four lockwashers (V).

26.Install drive key (A).

27.Read and understand all safety instructions and warnings before installing and operating pump.

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Roper G12-436 owner manual 3600/4600 GHB Gear Reduction Unit See 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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