20460936 Volvo.Penta Hollow screw

Introduction
An improvement has been made to the above listed excavators in order to increase engine performance. When the excavator is operated at higher altitudes, the replacement of the turbocharger and the muffler will be particularly noticeable. This modification will require the replacement of several engine components. The timing of the fuel injection pump will also be retarded by 6 degrees.Read the instructions. Make sure that you understand the instructions before you order any parts and/or before you make any changes to the engine.Reference: Service Manual, Parts Manual, Operation and Maintenance Manual, Service Magazine April, "Improved Engine Configuration Will Operate At Higher Altitudes"Parts Required
Table 1
Parts Required    
Item     Part Number     Description     Qty    
1     5I-7932     Hose     1    
2     5P-0597     Clamp     1    
3     5P-4868     Clamp     1    
4     5I-8122     Turbocharger     1    
5     5I-7933     Gasket     1    
6     5I-7934     Exhaust Manifold     1    
7     5I-7851     Gasket     1    
8     5I-8111     Gasket     1    
9     5I-7936     Exhaust Pipe     1    
10     5I-7639     Clamp     1    
11     5I-7935     Muffler     1    
12     5I-7931     Stud     7    
13     5I-8113     Oil Pipe     1    
14     2A-5222     Gasket     2    
15     5I-8126     Drain Pipe     1    
16     5I-7689     Gasket     1    
17     5I-8109     Oil Hose     1    
18     5I-8110     Elbow     1    
19     5I-7561     Gasket     1    
20     96-4841     Clamp     2    
21     5I-8127     Flange     1    
22     5C-7261     Nut     14    
23     5I-8058     Connector     1    
24     095-0965     Plug     1    Removal
Park the excavator in a designated maintenance area.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide", for tools and supplies suitable to collect and contain fluids in Caterpillar machines.Dispose of all fluids according to local regulations and mandates.
Drain the oil from the turbocharger. Refer to the Service Manual for the procedure. Collect the oil in a suitable container and dispose of the oil according to local regulations.
Illustration 1 g00281373
Disconnect oil lines (13) and (15). These lines will not be used again. Remove connector (23), gasket (16), gasket (19) and washers (14). These parts will not be used again.
Illustration 2 g00281372
Remove hose clamp (2) and hose clamp (3) .
Remove hose (1) .
Remove turbocharger (4), gasket (5), exhaust manifold (6), and exhaust manifold gasket (7). These parts will not be used again.
Illustration 3 g00281473
Remove muffler clamp (10), muffler