97 Chevy Suburban: 4wd..idling..the brake pedal, the engine..rough

97 Chevy Suburban: 4wd..idling..the brake pedal, the engine..rough

My parents have a 97 Chevy Suburban 4wd. The brakes are hard to push down on and require more pressure to stop the vehicle. Also, while idling and pressing the brake pedal, the engine runs very rough. I'm thinking that it is a vacuum leak of some sort. Could it be? Are there any simple test that I can do to narrow down the problem? Is there a check valve or some other thing that is common for a Suburban that can be replaced simply? Or could it be the master cylinder? Any help would be great. Thanks.


Check the link below for Answer:

http://www.justanswer.com/chevy/2ivnt-parents-97-chevy-suburban-4wd-brakes-hard.html

the brake pedal, the engine..rough

Vacuum Booster

REMOVAL & INSTALLATION:

REMOVAL & INSTALLATION

See Figure 1

1. Disconnect the negative battery cable.
2. Apply the parking brake.
3. Unplug all necessary electrical connections.
4. Remove the master cylinder from the booster and pull it off the studs, CAREFULLY! It is not necessary to disconnect the brake lines.
5. Disconnect the vacuum hose from the check valve.
6. If necessary, remove the brake light switch.
7. Disconnect the booster pushrod at the brake pedal.
8. Remove the booster mounting nuts, located on the inside of the firewall.

 

Fig. Fig. 1: Vacuum booster mounting

1. Lift off the booster and remove the gasket.

To install:

1. Install the booster with a new gasket.
2. Tighten the booster mounting nuts to 21 ft. lbs. (29 Nm) on all except 1996-98 models. On 1996-98 models, tighten the nuts to 26 ft. lbs. (36 Nm).
3. Install all remaining components.

http://www.au tozone.com/autozone/catalog/parts/partsShelf.jsp?categoryDisplayName=Brakes+%26+Traction+Control&fromType=parts&fromString=search&parentId=44-0¤tPage=1&filterByKeyWord=brake+booster&isSearchByPartNumber=false&navValue=14400143&categoryNValue=14499999&fromWhere=&itemId=143-0&displayName=Brake+Power+Booster&searchText=brake+booster

Brake Power Booster

Showing 1 - 2 of 2 Items
Sort by Price:  High  Low --- Select a Brand --- Cardone Reman Cardone Reman / Brake Power Booster Part Number:
54-71085   Price: $125.99
Core*Core value is the used part that manufacturers use for rebuilding. AutoZone charges the core value to customers because manufacturers include it in their prices. When you return your core to AutoZone, we'll refund your core charge.: $28.00
Total: $153.99 Application:
With JB5, JB6 and JB7 brake system
Warranty:
LLT Notes: W/o master cylinder
STORE PICK UP IN STOCK SHIP TO HOME AVAILABLE  Cardone Reman / Brake Power Booster Part Number:
52-7358   Price: $176.99
Core*Core value is the used part that manufacturers use for rebuilding. AutoZone charges the core value to customers because manufacturers include it in their prices. When you return your core to AutoZone, we'll refund your core charge.: $46.00
Total: $222.99 Application:
With JB8 brake system
Warranty:

Torque settings mains big ends head

Torque settings mains big ends head

2003 E46 320d Torque settings required

2003 E46 320d Torque settings required

Cylinder Head, Big ends and main bearings, Flywheel  2003 320d M47 engine.

Head bolts

1.40Nm

2. 80Nm

3 Slacken off 180 degrees

4. 50Nm

5 +90 degrees

6.+90 degress

On new head bolts...

Main bearings

1. 22Nm

2, +90 degrees

On new bolts...

Big ends

1. 5Nm

2. 20Nm +70 degrees

On new bolts....

Flywheel 105Nm

Series 1 1600 Torque setting for big ends, mains, and Head

Cylinder head bolts -

7/16 in. B.S.F - 50lb/ft

3/8 in. B.S.F. - 30lb/ft

Main bearing bolts- 80lb/ft

Big end bolts - 40lb/ft

Mini Torque Wrench Settings

Mini Torque Wrench Settings

Do those nuts and bolts up properly, or a wheel might fall off... if you've been trying to find correct torque wrench settings for your Mini here they are for just about everything that matters.

Suspension and Steering, Mk1/2

Fastener	Torque (lbft)	Torque (kgm)
Drive shaft coupling U bolts (rubber cross inner joints)	8 to 12	1.11 to 1.66
Drive shaft nut (front hub, drum brakes). Continue tightening until next split pin slot aligns. Do not slacken off until the next slot aligns!	60	8.3
Tie rod to front subframe	20 to 24	2.8 to 3.3
Tie rod to lower front suspension wishbone	17 to 20	2.8 to 3.3
Front suspension upper support arm pivot shaft nut	45 to 60	6.2 to 8.3
Front suspension lower wishbone pivot shaft nut	30 to 35	4.1 to 4.8
Wheel nuts	40 to 45	5.5 to 6.2
Steering column/rack pinion clamp bolt	8 to 10	1.11 to 1.38
Steering arm to swivel hub	30 to 35	4.1 to 4.8
Steering track-rod end to steering arm	20 to 24	2.8 to 3.3
Steering-wheel nut	32 to 37	4.5 to 5.1
Swivel hub ball joint socket	70 to 80	9.6 to 11.1
Swivel hub ball joint to suspension arms	35 to 40	4.8 to 5.5
Track rod end to steering rack locknut	35 to 40	4.8 to 5.5
Steering rack U-bolts to floor	10 to 12	1.4 to 1.7
Steering-column clip bracket to cloumn clip and parcel shelf	13 to 18	1.8 to 2.5
Rear suspension rear hub nut. Continue tightening until next split pin slot aligns. Do not slacken off until the next slot aligns!	60	8.3
Rear radius arm pivot shaft nut	45 to 60	6.2 to 8.3
Backplate to rear radius arm bolts	18 to 22	2.5 to 3.0

Suspension and Steering, Mini Cooper 997/998cc

Fastener	Torque (lbft)	Torque (kgm)
Caliper retaining bolts	35 to 40	4.8 to 5.5
Steering Lever ball joint	25 to 30	3.4 to 4.1

Suspension and Steering, Mini Cooper S Mk1-3

Fastener	Torque (lbft)	Torque (kgm)
Drive Shaft Nut. Continue tightening until next split pin slot aligns. Do not slacken off until the next slot aligns!	150	20.7

Electrical Components

Fastener	Torque (lbin)	Torque (kgm)
Alternator (11AC) Brush box fixing screws	10	0.115
Alternator (11AC) Diode heat sink fixings	25	0.288
Alternator (11AC) through-bolts	45 to 50	0.518 to 0.576
Alternator (16ACR) Shaft nut	25 to 30	3.5 to 4.2
Distributor Clamp Bolt (fixed nut type)	50	0.576
Distributor Clab Bolt (fixed bolt type)	30	0.345

Engine (848cc, 998cc)

Fastener	Torque (lbft)	Torque (kgm)
Camshaft Nut	60 to 70	8.3 to 9.7
Con Rod Big-end Bolts	35 to 38	4.8 to 5.3
Crankshaft Pulley Nut	70 to 80	9.7 to 11.1
Cylinder Head Stud Nuts	40	5.5
Cylinder Side Cover	3 to 4	0.42 to 0.55
Clutch Spring Housing to Pressure Plate set screws	16	2.2
Driving Strap to Flywheel set screw	16	2.2
Flywheel Centre Bolt	110 to 115	15.2 to 15.9
Flywheel Housing bolts and stud nuts	18	2.5
Gudgeon Pin Clamp Screws	22 to 25	3.0 to 3.5
Heater Control to Cylinder Head	6 to 8	0.83 to 1.11
Main Bearing set screws	60 to 65	8.3 to 9.0
Manifold to Cylinder Head	12 to 16	1.7 to 2.2
Oil Filter Bown Centre Bolt	12 to 16	1.7 to 2.2
Oil Pump	6 to 9	0.83 to 1.25
Oil Pipe banjo	35 to 40	4.8 to 5.5
Oil Pressure Release Valve - dome nut	40 to 45	5.5 to 6.2
Rocker Cover	3 to 4	0.41 to 0.55
Rocker Shaft Bracket Nuts	22 to 25	3.0 to 3.5
Spark Plugs	18	2.5
Timing Cover and Front Plate 1/4in UNF bolts	4 to 6	0.55 to 0.83
Timing Cover and Front Plate 5/16in UNF bolts	10 to 14	1.4 to 1.9
Water Pump	14 to 18	1.9 to 2.5
Water Outlet Elbow	6 to 9	0.83 to 1.25
Thermal Transmitter	16	2.2

Engine (970cc, 1071cc, 1275cc)

Use this data in conjuction with the data for Engine (850, 998cc)

Fastener	Torque (lbft)	Torque (kgm)
Cylinder Head nuts (11 stud head)	42	5.8
Cylinder Head bolt (11 stud head)	25	3.5
Con Rod Big-end nuts (assemble dry only)	40	5.5
Main Bearing set screws (early type)	67	9.3
Main Bearing nuts (later type)	57	7.9

Gearbox

Fastener	Torque (lbft)	Torque (kgm)
Third Motion Shaft bearing retainer screws	13	1.8
First Motion Shaft nut	150	20.7
Third Motion Shaft nut	150	20.7
Transmission Case to Crankcase	6	0.8
Transmission drain plug	25	3.5
Transmission case studs - 3/8in dia. UNC	8	1.1
Transmission case studs - 5/16in dia. UNC	6	0.8
Transmission case stud nuts 3/8in UNF	25	3.4
Transmission case stud nuts 5/16in UNF	18	2.5
Bottom Cover set screws 1/4in dia. UNC (change-speed tower)	6	0.8

Final Drive

Fastener	Torque (lbft)	Torque (kgm)
Driven Gear to Differential Cage	60	8.3
Driving Flange to Differential nut (tighten to next split pin hole)	70	9.6
Differential Housing End Cover bolts	18	2.5

Torque settings mains big ends head

 what are the torque settings for bearing mains,big ends and head cylinder bolts

BIG END, MAINS AND CYLINDER HEAD TORQUE SETTINGS FOR 2.4 LITRE JEEP CHEROKEE 2003 MODEL

1. Tighten the cylinder head bolts in the sequence shown. Using the 4 step torque turn method, tighten according to the following values:

• • Step 1: All to 34 Nm (25 ft. lbs.)
  • Step 2: All to 68 Nm (50 ft. lbs.)
  • Step 3: All to 68 Nm (50 ft. lbs.)

CAUTION: Do not use a torque wrench for the following step.
Step 4: Turn an additional 1/4 turn

• Step 5: Install and tighten bolts (1-10) in sequence shown, to 41 Nm (30 ft. lbs.) .

1. Tighten bolts (1-10) again to 41 Nm (30 ft. lbs.) PLUS 1/4 turn in sequence shown.
2. Install main bearing bedplate to engine block bolts (11-20), and torque each bolt to 28 Nm (20 ft. lbs.) in sequence shown.

Connecting Rod Cap Bolts 54 Nm (40 ft. lbs.) + 1/4 turn

1997 Jetta: Torque settings..vw..the head, fly wheel, big ends.

1997 Jetta3 1800 feul injection

Vibration Damper/belt Pulley Tighten 20 Nm (14.8 ft lb) Crankshaft Toothed Belt Sprocket Tighten 90 Nm (66 ft lb) + 90° Camshaft Sprocket Tighten 80 Nm (60 ft lb)

Main Bearing Cap

Tighten

65 Nm (48 ft lb)

FLYWHEEL TORQUE

Torque

60 Nm. (44 ft. lbs.) + 1/4 turn (90°) [1]

[1] Always replace bolts.

CYLINDER HEAD TIGHTENING TORQUE [1] :
1st sequence: 40 Nm (30 ft lb)
2nd sequence: 60 Nm (43 ft lb)
Final sequence: plus 1/2 turn (180°)

Here are some additional specifications, thanks

ntake Manifold

Mounting Bolts

25 Nm (18 ft. lbs.)

Bearing Cap Nut

20 Nm (15 ft. lbs.)

Rod Bearing Cap

Assembly Tighten 30 Nm (22 ft lb) + 90° To measure radial clearance Tighten 30 Nm (22 ft lb) but NOT additional 90°

TIGHTENING SPECIFICATIONS

Oil Pump Bolt	20 Nm (14 ft. lbs.)
Oil Tube To Block	10 Nm (7 ft. lbs.)

Exhaust Manifold to Cyl. Head	25 Nm (18 ft lb)
Exhaust Manifold to Front Exhaust Pipe	40 Nm (30 ft lb)

Water Pump

TIGHTENING SPECIFICATIONS Cover Bolts 10 Nm (7 ft. lbs.) Mounting Bolt and Studs 20 Nm (15 ft. lbs.) + 1/4 turn (90°) Pulley Bolts 25 Nm (18 ft. lbs.)

TIGHTENING SPECIFICATIONS 
Connecting Rod Nuts:
Tighten In Two Stages:

First Stage	30 Nm (22 ft. lbs.)
Second Stage	turn an additional 90°(1/4 turn)

NOTE:

• Oil threads and contact surfaces.
• Tighten only to: 30 Nm (22 ft. lbs.) when measuring radial (oil) clearance.