6F4991 BOLT Caterpillar parts
571G, 572G, 623B, 955K, 955L, 977K, 977L, D6C, D6D, D6E, D6E SR, D6G, D6G SR, D6G2 LGP, D6G2 XL, D7F, D7G, D7G2
Rating:
Alternative (cross code) number:
CA6F4991
6F-4991
6F4991
CA6F4991
6F-4991
6F4991
Weight: 1 pounds 0 kg.
Information:
GRIP LENGTH
107.95
mm
HEAD HEIGHT
17.07
mm
HEX SIZE
33.34
mm
LENGTH
165.1
mm
MATERIAL
Steel 1035 MPa Min Tensile Strength Rc 33-39
THREAD SIZE
.88-14
PIPELAYER, WHEEL SCRAPER,
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$10.24
17 Jan 2024
Amazon.com
CTP 6F4991 Grade 8 Hex High Head Plain Cap Screw, 7/8"-14 UNF Thread Size, 6-1/2" Length
CTP Hex Type of Head || Plain Coated || 7/8"-14 UNF Thread Size || 6-1/2" Length
CTP Hex Type of Head || Plain Coated || 7/8"-14 UNF Thread Size || 6-1/2" Length
$9.10
31 Jul 2023
Amazon.com
CTP 6F4991 Grade 8 Hex High Head Plain Cap Screw, 7/8"-14 UNF Thread Size, 6-1/2" Length
CTP Hex Type of Head || Plain Coated || 7/8"-14 UNF Thread Size || 6-1/2" Length
CTP Hex Type of Head || Plain Coated || 7/8"-14 UNF Thread Size || 6-1/2" Length
6F4991
Images:
Compatible equipment models: 6F4991:
Information:
Installation Procedure
Table 1
Required Tools    
Tool    Part Number    Part Description    Qty    
A     9S-9082     Engine Turning Tool     1    
B     8T-3052     Degree Wheel     1    
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Note: Install the connecting rod bearings dry when clearance checks are performed. Refer to Disassembly and Assembly, "Bearing Clearance - Check". Apply clean engine oil on the connecting rod bearings for final assembly.
Illustration 1 g00998730
Use Tooling (A) to rotate the crankshaft until the connecting rod journal is at the bottom center.
Install a new lower half connecting rod bearing (3) in connecting rod bearing cap (2) .Note: Ensure that bearing locking tab (4) is located in the notch of the connecting rod bearing cap.
Install a new upper half connecting rod bearing in the connecting rod.Note: Ensure that the bearing locking tab is located in the notch of the connecting rod.
Pull the connecting rod onto the crankshaft.
Illustration 2 g01016640
Position connecting rod bearing cap (2) on the connecting rod.Note: Ensure that the number on the side of the connecting rod bearing cap is on the same side as the number on the connecting rod. The bearing tabs of the connecting rod bearing cap and the connecting rod are located on the side of the piston cooling jet.
Lubricate the threads of bolts (1) with clean engine oil. Install the bolts.
Tighten bolts (1), as follows:
Tighten Bolt (A) and Bolt (C) to a torque of 70 4 N m (52 3 lb ft).
Tighten Bolt (B) and Bolt (D) to a torque of 70 4 N m (52 3 lb ft).
Turn Bolt (B) and Bolt (D) for an additional 60 5 degrees (1/6 turn).Note: If Tooling (B
Table 1
Required Tools    
Tool    Part Number    Part Description    Qty    
A     9S-9082     Engine Turning Tool     1    
B     8T-3052     Degree Wheel     1    
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Note: Install the connecting rod bearings dry when clearance checks are performed. Refer to Disassembly and Assembly, "Bearing Clearance - Check". Apply clean engine oil on the connecting rod bearings for final assembly.
Illustration 1 g00998730
Use Tooling (A) to rotate the crankshaft until the connecting rod journal is at the bottom center.
Install a new lower half connecting rod bearing (3) in connecting rod bearing cap (2) .Note: Ensure that bearing locking tab (4) is located in the notch of the connecting rod bearing cap.
Install a new upper half connecting rod bearing in the connecting rod.Note: Ensure that the bearing locking tab is located in the notch of the connecting rod.
Pull the connecting rod onto the crankshaft.
Illustration 2 g01016640
Position connecting rod bearing cap (2) on the connecting rod.Note: Ensure that the number on the side of the connecting rod bearing cap is on the same side as the number on the connecting rod. The bearing tabs of the connecting rod bearing cap and the connecting rod are located on the side of the piston cooling jet.
Lubricate the threads of bolts (1) with clean engine oil. Install the bolts.
Tighten bolts (1), as follows:
Tighten Bolt (A) and Bolt (C) to a torque of 70 4 N m (52 3 lb ft).
Tighten Bolt (B) and Bolt (D) to a torque of 70 4 N m (52 3 lb ft).
Turn Bolt (B) and Bolt (D) for an additional 60 5 degrees (1/6 turn).Note: If Tooling (B
Caterpillar parts catalog:
Parts bolt Caterpillar catalog:
3K7127
BOLT
7A, 814, 815, 816, 816B, 8S, 8U, 966C, 973, 983, 9A, 9S, D7G, D9L
7A, 814, 815, 816, 816B, 8S, 8U, 966C, 973, 983, 9A, 9S, D7G, D9L
3S0336
BOLT
571G, 572G, 973, 977H, 977K, 977L, D7F, D7G
571G, 572G, 973, 977H, 977K, 977L, D7F, D7G
0S1606
BOLT
12E, 14M, 613G, 615C, 623E, 623F, 623G, 623H, 623K, 623K LRC, D6C, SNOW WING
12E, 14M, 613G, 615C, 623E, 623F, 623G, 623H, 623K, 623K LRC, D6C, SNOW WING
9K7005
BOLT
955K, 955L
955K, 955L
1S0876
BOLT
571G, 572G, D7F, D7G, D7G2
571G, 572G, D7F, D7G, D7G2
1V7793
BOLT
955K, 955L
955K, 955L
8S4748
BOLT
777, D7G, D7G2
777, D7G, D7G2
6V0314
BOLT
120G, 120H, 120H ES, 120H NA, 120K, 120K 2, 135H, 135H NA, 173B, 621B, 621E, 623B, 623E, 627B, 627E, 633D, 637D, 637E, 639D, 641B, 651B, 651E, 657B, 657E, 943, 953, D11R, D11T, D250D, D250E, D300E, D3...
120G, 120H, 120H ES, 120H NA, 120K, 120K 2, 135H, 135H NA, 173B, 621B, 621E, 623B, 623E, 627B, 627E, 633D, 637D, 637E, 639D, 641B, 651B, 651E, 657B, 657E, 943, 953, D11R, D11T, D250D, D250E, D300E, D3...
9H6530
BOLT 4.25 dm(16.75 in.) long
814, 950, 955K, 955L, 966C, D5, D5B, D8H
814, 950, 955K, 955L, 966C, D5, D5B, D8H
4M4924
BOLT 3.68 dm(14.50 in.) long
814, 950, 955K, 955L, 966C, 988B, 988F, 988F II, D5, D5B
814, 950, 955K, 955L, 966C, 988B, 988F, 988F II, D5, D5B
7X0435
BOLT
980C, 980F, 980F II, D7G, D7G2, D7H, D7R, D7R II, D8N
980C, 980F, 980F II, D7G, D7G2, D7H, D7R, D7R II, D8N
7H3579
BOLT
10S, 615, 615C, 623B, 623E, 623F, 623G, 854G, 854K, D10, D11N, D11R, D9E, D9G, R1300, R1300G, R1300G II, R1700 II, R1700G, R2900, R2900G
10S, 615, 615C, 623B, 623E, 623F, 623G, 854G, 854K, D10, D11N, D11R, D9E, D9G, R1300, R1300G, R1300G II, R1700 II, R1700G, R2900, R2900G
1D4634
BOLT
120, 120B, 120G, 12F, 130G, 140, 140B, 14E, 14G, 14H, 14H NA, 16, 16G, 16H, 16H NA, 3P, 630A, 630B, 631B, 631D, 631E, 633, 637, 637B, 637D, 637E, 641B, 651, 651B, 651E, 657, 657B, 657E, 666, 768C, 769...
120, 120B, 120G, 12F, 130G, 140, 140B, 14E, 14G, 14H, 14H NA, 16, 16G, 16H, 16H NA, 3P, 630A, 630B, 631B, 631D, 631E, 633, 637, 637B, 637D, 637E, 641B, 651, 651B, 651E, 657, 657B, 657E, 666, 768C, 769...
1D4645
BOLT
528, 528B, 530B, 594, 594H, 651E, 657E, 777B, 824C, 824S, 955L, 963, 973, 990, 990 II, 992C, 992D, D10, D40D, D6D, D6E, D6E SR, D6G, D6G SR, D6G2 XL, D8L, D9G, D9H, D9N, D9R, D9T
528, 528B, 530B, 594, 594H, 651E, 657E, 777B, 824C, 824S, 955L, 963, 973, 990, 990 II, 992C, 992D, D10, D40D, D6D, D6E, D6E SR, D6G, D6G SR, D6G2 XL, D8L, D9G, D9H, D9N, D9R, D9T
2S9732
BOLT
227, 621B, 627B, 977K, 9A, D5, D5B, D5E, D6C, D6D, D6E, D6E SR, D6G, D6G SR, D6G2 LGP, D6G2 XL, D7F, D7G, D7G2, D8H, D8K, D9G, D9H, D9N
227, 621B, 627B, 977K, 9A, D5, D5B, D5E, D6C, D6D, D6E, D6E SR, D6G, D6G SR, D6G2 LGP, D6G2 XL, D7F, D7G, D7G2, D8H, D8K, D9G, D9H, D9N
3S8182
BOLT-SPROCKET
561C, 561M, 561N, 943, 955H, 955K, 955L, 963, 963B, 963C, 963D, D4H, D4H XL, D4HTSK II, D4HTSK III, D5, D5B, D5E, D5M, D5N, D6C, D6D, D6E, D6E SR, D6G SR, D6K, D6K LGP, D6K XL, PL61
561C, 561M, 561N, 943, 955H, 955K, 955L, 963, 963B, 963C, 963D, D4H, D4H XL, D4HTSK II, D4HTSK III, D5, D5B, D5E, D5M, D5N, D6C, D6D, D6E, D6E SR, D6G SR, D6K, D6K LGP, D6K XL, PL61
3B4990
BOLT
12F, 14E, 561B, 561C, 583H, 941, 951B, 955C, 955H, 955K, 955L, 977D, 977H, 977K, 977L, 983, D4D, D5, D5B, D5E, D6C, D6D, D6E, D6E SR, D6F SR, D6G, D6G SR, D6G2 LGP, D6G2 XL, D7F, D8H, D8K
12F, 14E, 561B, 561C, 583H, 941, 951B, 955C, 955H, 955K, 955L, 977D, 977H, 977K, 977L, 983, D4D, D5, D5B, D5E, D6C, D6D, D6E, D6E SR, D6F SR, D6G, D6G SR, D6G2 LGP, D6G2 XL, D7F, D8H, D8K
1T0448
BOLT-12 POINT HEAD
572G, D5B, D5E, D6C, D6D, D6E, D6E SR, D6G, D6G2 LGP, D6G2 XL, D7F, D7G, D7G2, D8L
572G, D5B, D5E, D6C, D6D, D6E, D6E SR, D6G, D6G2 LGP, D6G2 XL, D7F, D7G, D7G2, D8L
5P8945
BOLT-PLOW
815B, 824C, 826C, 920, 930, 936, 950, 950B, 966C, 966D, 980C, 988B, 992C, D4E, D4E SR, D5B, D5E, D6D, D6E, D6E SR, D6F SR, D6G, D6G SR, D6G2 XL, D7G, G936, IT28
815B, 824C, 826C, 920, 930, 936, 950, 950B, 966C, 966D, 980C, 988B, 992C, D4E, D4E SR, D5B, D5E, D6D, D6E, D6E SR, D6F SR, D6G, D6G SR, D6G2 XL, D7G, G936, IT28
0S1844
BOLT
5S, 6A, 6S, D6D, D6E, D6E SR, D6G, D6G SR, D6G2 LGP, D6G2 XL, D6R
5S, 6A, 6S, D6D, D6E, D6E SR, D6G, D6G SR, D6G2 LGP, D6G2 XL, D6R
5P8091
BOLT-LOCKING
518, 572G, 943, 953, 953B, 963, 963B, 963C, 977K, D5E, D6D, D6E, D6E SR, D6G, D6G2 LGP, D6G2 XL, D7G, D7G2, RM-250C, RR-250, RR-250B, SS-250
518, 572G, 943, 953, 953B, 963, 963B, 963C, 977K, D5E, D6D, D6E, D6E SR, D6G, D6G2 LGP, D6G2 XL, D7G, D7G2, RM-250C, RR-250, RR-250B, SS-250
8J1922
BOLT-12 POINT HEAD
824C, 826C, D5, D5B, D6C, D6E SR, D7G
824C, 826C, D5, D5B, D6C, D6E SR, D7G
7J5590
BOLT-FILTER
153, 163, 941, 951B, D5B, D5E, D6D, D6E, D6E SR
153, 163, 941, 951B, D5B, D5E, D6D, D6E, D6E SR
4B0966
BOLT
120B, 12E, 12F, 140, 140B, 14E, 572G, 583K, 983, 983B, D6D, D6E, D6E SR, D6F SR, D6G, D6G SR, D6G2 LGP, D6G2 XL, D7F, D7G, D7G2, D8K
120B, 12E, 12F, 140, 140B, 14E, 572G, 583K, 983, 983B, D6D, D6E, D6E SR, D6F SR, D6G, D6G SR, D6G2 LGP, D6G2 XL, D7F, D7G, D7G2, D8K