4649_233_A Red Gear.pdf

The heat exchanger is an American Industrial Heat Transfer, p/n AA-1042-4-6-TP-CN7-B-Z. This is a two pass unit having 3/8 diameter 90-10 cupro-nickel tubes, fixed tube bundle, bronze end bonnets, and zinc anodes for corrosion protection. Oil from the pump is circulated through the shell and cooling water is circulated through the tubes.

Approximately 60 GPM of cooling water at 85°F will be required to maintain the unit at the desired temperature. An automatic temperature regulator valve is provided to control the oil flow rate through the heat exchanger.

If the heat exchanger should develop a leak in either the shell or tube side, field repair should not be attempted as it cannot be dismantled for repair. A faulty exchanger should be replaced with a new one as quickly as possible. The complete lubricating system and gear unit should be purged and flushed out as quickly as practical if water contaminates the lubrication system.

The duplex oil filters are of all metal construction having permanent edge type cartridges. The “T” handle on the filters should be turned a few turns daily to remove any accumulation of foreign material from the filter discs and maintain proper cleaning action of the filter.

A sectional view illustrating the internal construction of the filter is shown in Figure 5.

The gear driven oil pump is a Tuthill Model 5RCS which has an automatic reversing feature. The pump is designed to maintain constant direction of flow from the same pump port, regardless of the direction of shaft rotation.

The Tuthill internal gear principle is based upon the use of a rotor, idler gear and crescent shaped partition. Only two moving parts comprise the pumping element. Figure 6 illustrates this principle.

Figure 5. F igure 6.

Crescent

LUFKIN FOUNDRY & MACHINE COMPANY

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AUXILIARY EQUIPMENT LIST

ITEM # ON

DESCRIPTION UNIT P/L MANUFACTURERS MODEL NUMBER

Clutch 21 Fawick No 28VC1000 (Fawick Drawing No. LA-5576)

Rotoseal 22 Fawick No C-2

Filter 68 O No EGFS-1, Super Auto-Clean with 1½� 125 PSI ASA Flanged Head, Drawn Steel Sump, 2¼ x 8 Filter Element with Internal Bypass Relief Valve

18Pump (Gear Driven)

Tuthill #5RCS with Shaft Modification per Lufkin Drawing BM23849.

141Pump

See Reduction Gear Pre-Lube Pump in TP-3236

SWBS 503

Pressure Switch (Aux. Pump)

Allen Bradley No 836 AVII-JKC, Set to Start Auxiliary Pump When Pressure Falls to 15 PSI and Stop Pump When Pressure Rises to 25

PSI.

Low Pressure- High Temperature Alarm Switch

Robertshaw No 539-B2 or 542-H, Set o make Contact When Pressure Drops to 15 PSI and When emp ises to 175°F. (for Alarm)

Relief Valve 142 Fulflo # VJF-7, 1½� Flanged Connections, 30/100 PSI Range, WS Spring.

Heat Exchanger American Industrial Heat Transfer, 2 Pass, P/N AA-1042-4-6-TP-CN7-B-Z

Kingsbury No BHB-19

62 See TP-3231, SWBS 252

Bearing

Turning Gear

Interlock Valve Robertshaw I-1284-B-10, Normal Operating

Temperature Regulating Valve

Temperature at Midstroke 160°F

REV -

Donaldson Filter Model HMK05

Elec. Aux.

55 T

T R

Thrust 10